var aiEnableCookie=false; 
var aiId='';
var aiExtraSpace = 0;

aiReadyCallbacks = ( typeof aiReadyCallbacks != 'undefined' && aiReadyCallbacks instanceof Array ) ? aiReadyCallbacks : [];
                    

/**
 *  This function resizes the iframe after loading to the height 
 *  of then content of the iframe. 
 *  
 *  The extra space is not stored in the cookie! The height would 
 *  be added every time otherwise and the iframe would grow,  
 */ 
function aiResizeIframe(obj, resize_width) { 
  try {
    if (obj.contentWindow.document.body != null) {
      var oldScrollposition = jQuery(document).scrollTop();     
      obj.height = 1; // set to 1 because otherwise the iframe does never get smaller.
      var newheight = aiGetIframeHeight(obj);
      obj.height = newheight + 'px'; 
      
      // set the height of the zoom div
      if (jQuery('#ai-zoom-div-' + obj.id).length != 0) {
         var zoom = window["zoom_" + obj.id];
         jQuery('#ai-zoom-div-' + obj.id).css("height", newheight * zoom);
      }
      
      if (aiEnableCookie && aiExtraSpace == 0 ) {  
          aiWriteCookie(newheight);
      }
      jQuery(document).scrollTop(oldScrollposition);
      if (resize_width == 'true') { 
        obj.width = aiGetIframeWidth(obj) + 'px';
      }
      var fCallback = window["resizeCallback" + obj.id];
      fCallback();
    } else {
      // body is not loaded yet - we wait 100 ms.
      setTimeout(function() { aiResizeIframe(obj, resize_width); },100); 
    }
  } catch(e) {
    if (console && console.log) {
      console.log("Advanced iframe configuration error: You have enabled the resize of the iframe for pages on the same domain. But you use an iframe page on a different domain. You need to use the external workaround like described in the settings. Also check the next log. There the browser message for this error is displayed.");
      console.log(e);
    } 
  }
}

/**
 *  Get the iframe height
 */ 
function aiGetIframeHeight(obj) {
      var bodyHeight = Math.max(obj.contentWindow.document.body.scrollHeight, 
       obj.contentWindow.document.body.offsetHeight, 
       obj.contentWindow.document.documentElement.scrollHeight, 
       obj.contentWindow.document.documentElement.offsetHeight);
       var newheight = bodyHeight + aiExtraSpace;
       return newheight; 
}

/**
 *  Get the iframe width
 */ 
function aiGetIframeWidth(obj) {
    var oldWidth =  obj.width;
    obj.width = 1; // set to 1 because otherwise I don't get the minimum width 
    var bodyWidth = Math.max(obj.contentWindow.document.body.scrollWidth, 
          obj.contentWindow.document.body.offsetWidth, 
          obj.contentWindow.document.documentElement.scrollWidth, 
          obj.contentWindow.document.documentElement.offsetWidth);
    if (bodyWidth != 1) { // avoid that fully responsive sites do not get displayed at all.
      obj.width = bodyWidth + 'px'; 
    } else {
      obj.width = oldWidth;   
    }       
    return bodyWidth;
}

/**
 *  Get the current width of the iframe inside the parent. 
 */ 
function aiGetParentIframeWidth(obj) {
    if (obj != null && jQuery("#" + obj.id).length != 0) {
        return jQuery("#" + obj.id).width();
    } else {
        return -1;
    } 
}


/**
 *  Resizes an iframe to a given height.
 *  this is used for xss enabled iframes.
 *  Please read the documentation!   
 */ 
function aiResizeIframeHeightById(id, nHeight) {
    var fCallback = window["resizeCallback" + id];
    fCallback();
    var height = parseInt(nHeight) + aiExtraSpace;
    var iframe = document.getElementById(id); 
		var oldScrollposition = jQuery(document).scrollTop();
    iframe.setAttribute('height', height + 'px');
    jQuery(document).scrollTop(oldScrollposition);
    if (aiEnableCookie && aiExtraSpace == 0) {
      aiWriteCookie(height);
    }
}

/**
 * Scrolls the parent window to the top.
 * This is e.g. wanted when you have a link in the iframe and you want that the 
 * page starts at the top and not that only the iframe changes. 
 */ 
function aiScrollToTop() {
  window.scrollTo(0,0); 
}

/**
 * Writes the last height to the cookie.
 */ 
function aiWriteCookie(height) {
  var cookieName = 'ai-last-height'; 
  if (aiId != '') {
    cookieName =  cookieName + '-' + aiId ;
  }
  var cookieStr = cookieName + "=" + height;
  document.cookie=cookieStr;
}

/**
 * Reads the cookie and preset the height of the iframe
 */ 
function aiUseCookie() {
  var cookieName = 'ai-last-height'; 
  if (aiId != '') {
    cookieName = cookieName + '-' + aiId ;
  } 
  var allcookies = document.cookie;
  // Get all the cookies pairs in an array
  cookiearray  = allcookies.split(';');
  // Now take key value pair out of this array
  for(var i=0; i<cookiearray.length; i++){
    name = cookiearray[i].split('=')[0];
    value = cookiearray[i].split('=')[1];
    // alert("Key is : " + name + " and Value is : " + value);
    // cookie does exist and has a numeric value
    if (name == cookieName && value != null && ai_is_numeric(value)) { 
       var iframe = document.getElementById(aiId);
	     iframe.setAttribute('height', (parseInt(value)) + 'px');
    } 
  }                               
}

/**
 *  check if we have a numeric input
 */ 
function ai_is_numeric(input){
    return !isNaN(input);
}

/**
* Disable the additional_height input field
*/     
function aiDisableHeight() {
  jQuery("#additional_height").attr('readonly','readonly');
  jQuery("#additional_height").val('0');
}

/**
* Enable the additional_height input field
*/    
function aiEnableHeight() {
  jQuery("#additional_height").removeAttr('readonly');
}

/**
 * Removes all elements from an iframe except the given one
 * 
 * @param iframeId id of the iframe
 * @param showElement the id, class (jQuery syntax) of the element that should be displayed. 
 */ 
function aiShowElementOnly( iframeId, showElement ) {
  try {
    var iframe = jQuery(iframeId).contents().find("body"); 
    var selectedBox = iframe.find(showElement).clone(true,true); 
    iframe.find("*").remove(); 
    iframe.append(selectedBox);
  }  catch(e) {
    if (console && console.log) {
      console.log("Advanced iframe configuration error: You have enabled to show only one element of the iframe for pages on the same domain. But you use an iframe page on a different domain. You need to use the pro version of the external workaround like described in the settings. Also check the next log. There the browser message for this error is displayed.");
      console.log(e);
    } 
  }
}

function checkIfValidTarget(evt, elements) {
  var targ;
  if (!evt) var e = window.event;
  if (evt.target) targ = evt.target;
  else if (evt.srcElement) targ = evt.srcElement;
  if (targ.nodeType == 3) {	targ = targ.parentNode; }
  
  var parts = elements.split(','); 
  // check each part if we have a match...
  for (var i=0; i< parts.length; ++i) {
    var selectorArray = parts[i].split(":");   
    if (selectorArray[0].toLowerCase() === targ.nodeName.toLowerCase()) {
      if (selectorArray.length > 1) {
           if (targ.id.toLowerCase().indexOf(selectorArray[1].toLowerCase()) !== -1) {
               return true;
           }
      } else {
        return true;
      }
    } 
  }
  return false;
}

function openSelectorWindow (url) {
   var local_width =  jQuery("#width").val();
   var local_height = jQuery("#height").val();

   if (local_width.indexOf("%") >= 0 || Number(local_width) < 900) {
       local_width = 900;   
   }
   local_width = Number(local_width) + 40;
   if ( local_width > (screen.width)) {
       local_width = screen.width; 
   }     
   if (local_height.indexOf("%") >= 0) {
       local_height = screen.height;   
   } else {
        local_height =  Number(local_height) + 480; 
   }
   if ( local_height > (screen.height-50)) {
       local_height = screen.height-50; 
   } 
   var options = "width="+local_width+",height="+local_height+",left=0,top=0,resizable=1,scrollbars=1";
   var popup_window = window.open(url, "", options);
   popup_window.focus();
}

function openTab(id) {
    jQuery(id).next().show(); 
}

/**
 *  This function initializes all checks that are done by Javascript
 *  on the admin page like enabling disabling fields... 
 */ 
function initAdminConfiguration(isPro, acc_type) {
  
    // enable checkbox of onload_resize_delay and if resize is set to true external workaround is set to false
    if (jQuery('input[type=radio][name=onload_resize]:checked').val() == 'false') {
        jQuery('#onload_resize_delay').prop('readonly',true);
    }     
    jQuery('input[type=radio][name=onload_resize]').click( function(){
    if (jQuery(this).val() == 'true') {
           jQuery('#onload_resize_delay').prop('readonly', false);
           jQuery('input:radio[name=enable_external_height_workaround]')[1].checked = true;
        } else {
           jQuery('#onload_resize_delay').prop('readonly', true);
           jQuery('#onload_resize_delay').val('');
        }
    });
    
    // if external workaround is set to to true resize on load is set to false and the 
    // onload_resize_delay is made readonly
    jQuery('input[type=radio][name=enable_external_height_workaround]').click( function(){
    if (jQuery(this).val() == 'true') {
           jQuery('input:radio[name=onload_resize]')[1].checked = true;
           jQuery('#onload_resize_delay').prop('readonly', true);
           jQuery('#onload_resize_delay').val('');
        }
    });
 
    // Show only a part of the iframe enable/disable
     if (jQuery('input[type=radio][name=show_part_of_iframe]:checked').val() == 'false') {
        jQuery('#show_part_of_iframe_x').prop('readonly',true);
        jQuery('#show_part_of_iframe_y').prop('readonly',true);
        jQuery('#show_part_of_iframe_height').prop('readonly',true);
        jQuery('#show_part_of_iframe_width').prop('readonly',true);         
        jQuery('input[id=show_part_of_iframe_allow_scrollbar_horizontal]:radio').attr('disabled',true);  
        jQuery('input[id=show_part_of_iframe_allow_scrollbar_vertical]:radio').attr('disabled',true);  
        jQuery('#show_part_of_iframe_next_viewports').prop('readonly',true);
        jQuery('input[id=show_part_of_iframe_next_viewports_loop]:radio').attr('disabled',true);
        jQuery('#show_part_of_iframe_new_window').prop('readonly',true);
        jQuery('#show_part_of_iframe_new_url').prop('readonly',true);
        jQuery('input[id=show_part_of_iframe_next_viewports_hide]:radio').attr('disabled',true); 
        jQuery('#show_part_of_iframe_style').prop('readonly',true);         
     }
      jQuery('input[type=radio][name=show_part_of_iframe]').click( function(){
    if (jQuery(this).val() == 'false') {
          jQuery('#show_part_of_iframe_x').prop('readonly',true);
          jQuery('#show_part_of_iframe_y').prop('readonly',true);
          jQuery('#show_part_of_iframe_height').prop('readonly',true);
          jQuery('#show_part_of_iframe_width').prop('readonly',true);
          jQuery('input[id=show_part_of_iframe_allow_scrollbar_horizontal]:radio').attr('disabled',true);  
          jQuery('input[id=show_part_of_iframe_allow_scrollbar_vertical]:radio').attr('disabled',true);  
          jQuery('#show_part_of_iframe_next_viewports').prop('readonly',true);
          jQuery('input[id=show_part_of_iframe_next_viewports_loop]:radio').attr('disabled',true);
          jQuery('#show_part_of_iframe_new_window').prop('readonly',true);
          jQuery('#show_part_of_iframe_new_url').prop('readonly',true);
          jQuery('input[id=show_part_of_iframe_next_viewports_hide]:radio').attr('disabled',true);
          jQuery('#show_part_of_iframe_style').prop('readonly',true);         
        } else {
          jQuery('#show_part_of_iframe_x').prop('readonly',false);
          jQuery('#show_part_of_iframe_y').prop('readonly',false);
          jQuery('#show_part_of_iframe_height').prop('readonly',false);
          jQuery('#show_part_of_iframe_width').prop('readonly',false);
          jQuery('input[id=show_part_of_iframe_allow_scrollbar_horizontal]:radio').attr('disabled',false);  
          jQuery('input[id=show_part_of_iframe_allow_scrollbar_vertical]:radio').attr('disabled',false);  
          jQuery('#show_part_of_iframe_next_viewports').prop('readonly',false);
          jQuery('input[id=show_part_of_iframe_next_viewports_loop]:radio').attr('disabled',false);
          jQuery('#show_part_of_iframe_new_window').prop('readonly',false);
          jQuery('#show_part_of_iframe_new_url').prop('readonly',false);
          jQuery('input[id=show_part_of_iframe_next_viewports_hide]:radio').attr('disabled',false);
          jQuery('#show_part_of_iframe_style').prop('readonly',false);         
    
        }
    }); 
    
    // if expert mode
    if (jQuery('input[type=radio][name=expert_mode]:checked').val() == 'true') {
      jQuery('.description').css('display','none');
      jQuery('table.form-table th').css('cursor','pointer');
      jQuery('table.form-table th').css('padding-top','8px').css('padding-bottom','2px'); 
      jQuery('table.form-table td').css('padding-top','5px').css('padding-bottom','5px'); 
      jQuery('table.form-table th').click(function() {
           jQuery('.description').css('display','none');
           jQuery('.description', jQuery(this).parent()).css('display','block');
        }); 
    }
    jQuery('input[type=radio][name=expert_mode]').click( function(){
      if (jQuery(this).val() == 'false') {
        jQuery('.description').css('display','block');
        jQuery('table.form-table th').css('cursor','auto');
        jQuery('table.form-table th').off("click");
        jQuery('table.form-table th').css('padding-top','20px').css('padding-bottom','20px'); 
        jQuery('table.form-table td').css('padding-top','15px').css('padding-bottom','15px'); 
      } else {
        jQuery('.description').css('display','none');
        jQuery('table.form-table th').css('cursor','pointer');  
        jQuery('table.form-table th').css('padding-top','8px').css('padding-bottom','2px'); 
        jQuery('table.form-table td').css('padding-top','5px').css('padding-bottom','5px'); 
        jQuery('table.form-table th').click(function() {
           jQuery('.description').css('display','none');
           jQuery('.description', jQuery(this).parent()).css('display','block');
        }); 
      }
    });

   
   if (isPro && (acc_type !== "false")) {
       jQuery('#accordion').find('h1').click(function(){
           jQuery(this).next().slideToggle();
       }).next().hide(); 
       
       jQuery('#accordion').find('a').click(function(){
           var hash = jQuery(this).prop("hash");
           var hash_only = "#h1-" + hash.substring(1);
           jQuery(hash_only).next().show(); 
           location.hash = hash_only;
       });
       var hash = jQuery("#" + acc_type).next().show(); 
        
   } else {
      jQuery('#accordion').find('h1').hide();
      jQuery('#accordion').attr("id","noacc");
   }
   
    // lazy load
    if (jQuery('input[type=radio][name=enable_lazy_load_manual]:checked').val() == 'false') {
        jQuery('#enable_lazy_load_manual_element').prop('readonly',true);
    }  
   
    jQuery('input[type=radio][name=enable_lazy_load_manual]').click( function(){
    if (jQuery(this).val() == 'false' || jQuery(this).val() == 'auto') {
           jQuery('#enable_lazy_load_manual_element').prop('readonly',true);            
        } else {
           jQuery('#enable_lazy_load_manual_element').prop('readonly',false);
        }
    });
    
    if (jQuery('input[type=radio][name=enable_lazy_load]:checked').val() == 'false') {
        jQuery('#enable_lazy_load_threshold').prop('readonly',true);
        jQuery('#enable_lazy_load_fadetime').prop('readonly',true);
        jQuery('input[id=enable_lazy_load_manual1]:radio').attr('disabled',true);  
        jQuery('input[id=enable_lazy_load_manual2]:radio').attr('disabled',true);  
        jQuery('input[id=enable_lazy_load_manual3]:radio').attr('disabled',true);  
        jQuery('#enable_lazy_load_manual_element').prop('readonly',true);
    }  

    jQuery('input[type=radio][name=enable_lazy_load]').click( function(){
    if (jQuery(this).val() == 'false') {
           jQuery('#enable_lazy_load_threshold').prop('readonly', true); 
           jQuery('#enable_lazy_load_fadetime').prop('readonly', true); 
           jQuery('input[id=enable_lazy_load_manual1]:radio').attr('disabled',true); 
           jQuery('input[id=enable_lazy_load_manua12l]:radio').attr('disabled',true);  
           jQuery('input[id=enable_lazy_load_manual3]:radio').attr('disabled',true);           
           jQuery('#enable_lazy_load_manual_element').prop('readonly',true);            
        } else {
           jQuery('#enable_lazy_load_threshold').prop('readonly', false);
           jQuery('#enable_lazy_load_fadetime').prop('readonly', false); 
           jQuery('input[id=enable_lazy_load_manual1]:radio').attr('disabled',false);          
           jQuery('input[id=enable_lazy_load_manual2]:radio').attr('disabled',false); 
           jQuery('input[id=enable_lazy_load_manual3]:radio').attr('disabled',false); 
           if (jQuery('input[type=radio][name=enable_lazy_load_manual]:checked').val() == 'false' ||
               jQuery('input[type=radio][name=enable_lazy_load_manual]:checked').val() == 'auto' ) {
             jQuery('#enable_lazy_load_manual_element').prop('readonly',true);
           } else {
             jQuery('#enable_lazy_load_manual_element').prop('readonly', false);
           }
        }
    }); 
    
    jQuery('.confirmation').on('click', function () {
        return confirm('Are you sure?');
    }); 
    
     jQuery("a.post").click(function(e) {
          e.stopPropagation();
          e.preventDefault();
          var href = this.href;
          var parts = href.split('?');
          var url = parts[0];
          var params = parts[1].split('&');
          var pp, inputs = '';
          url += "?" + params[0]; 
          for(var i = 1, n = params.length; i < n; i++) {
              pp = params[i].split('=');
              inputs += '<input type="hidden" name="' + pp[0] + '" value="' + pp[1] + '" />';
          }
          jQuery("body").append('<form action="'+url+'" method="post" id="poster">'+inputs+'</form>');
          jQuery("#poster").submit();
      });         
}

/**
 *  Resizes the iframe with a certain ratio.
 *  Width is read and the height is than calculated. 
 */ 
function aiResizeIframeRatio(obj, ratio) {
   var width = jQuery("#" + obj.id).width();  
   var valueRatio = parseFloat(ratio.replace(",", "."));
   var newHeight = Math.ceil(width * valueRatio); 
   obj.height = newHeight + 'px';  
}

/**
 * Generate a shortcode string from the current settings.
 */ 
function aiGenerateShortcode() {
    var output = '[advanced_iframe ';

    // default section
    output += 'securitykey="' + jQuery("#securitykey").val() + '" ';
    output += 'use_shortcode_attributes_only="true" ';
 
    var src = jQuery("#src").val();
    if (src == "") {
       alert("Required url is missing.");
    } else {
       output += 'src="' + src + '" ';
    }
    
    output += aiGenerateTextShortcode("width");
    output += aiGenerateTextShortcode("height");  
    output += aiGenerateRadioShortcode("scrolling","auto");      
    output += aiGenerateTextShortcode("marginwidth");
    output += aiGenerateTextShortcode("marginheight");     
    output += aiGenerateTextShortcode("frameborder");      
    output += aiGenerateRadioShortcode("transparency","true"); 
    output += aiGenerateTextShortcode("class");  
    output += aiGenerateTextShortcode("style");  
    output += aiGenerateTextShortcode("id");  
    output += aiGenerateTextShortcode("name");  
    output += aiGenerateRadioShortcode("allowfullscreen","false");
   
    // advanced settings
    output += aiGenerateTextShortcode("url_forward_parameter");  
    output += aiGenerateTextShortcode("map_parameter_to_url");  
    // output += aiGenerateTextShortcode("dynamic_url_parameter");   
    output += aiGenerateRadioShortcode("onload_scroll_top","false");
    output += aiGenerateRadioShortcode("hide_page_until_loaded","false");
    output += aiGenerateRadioShortcode("show_iframe_loader","false");   
    output += aiGenerateTextShortcode("iframe_zoom");
    output += aiGenerateRadioShortcode("auto_zoom", "false");
    output += aiGenerateRadioShortcode("enable_responsive_iframe","false");
    output += aiGenerateTextShortcode("iframe_height_ratio");
    
    output += aiGenerateRadioShortcode("enable_lazy_load","false");
    output += aiGenerateTextShortcodeWithDefault("enable_lazy_load_threshold","3000");
    output += aiGenerateTextShortcode("enable_lazy_load_fadetime");
    output += aiGenerateRadioShortcode("enable_lazy_load_manual","false");
    output += aiGenerateRadioShortcode("enable_lazy_load_manual_element","false");

    // modify the parent page
   output += aiGenerateTextShortcode("hide_elements");
   output += aiGenerateTextShortcode("content_id");
   output += aiGenerateTextShortcode("content_styles");
   output += aiGenerateRadioShortcode("add_css_class_parent","false");  

   output += aiGenerateTextShortcode("change_parent_links_target");
   
   // show only a part of the iframe
   var showPartOfIframe = aiGenerateRadioShortcode("show_part_of_iframe","false");  
   output += showPartOfIframe;  
   
   if (showPartOfIframe != '') {
     output += aiGenerateTextShortcode("show_part_of_iframe_x");
     output += aiGenerateTextShortcode("show_part_of_iframe_y");
     output += aiGenerateTextShortcode("show_part_of_iframe_width");
     output += aiGenerateTextShortcode("show_part_of_iframe_height");
     output += aiGenerateRadioShortcode("show_part_of_iframe_allow_scrollbar_horizontal","false");  
     output += aiGenerateRadioShortcode("show_part_of_iframe_allow_scrollbar_vertical","false");  
     output += aiGenerateTextShortcode("show_part_of_iframe_style");
     
     output += aiGenerateTextShortcode("show_part_of_iframe_next_viewports");
     output += aiGenerateRadioShortcode("show_part_of_iframe_next_viewports_loop","false");  
     output += aiGenerateTextShortcode("show_part_of_iframe_new_window");
     output += aiGenerateTextShortcode("show_part_of_iframe_new_url");
     output += aiGenerateRadioShortcode("show_part_of_iframe_next_viewports_hide","false");  
   }
   output += aiGenerateTextShortcode("hide_part_of_iframe");
   // same domain
   output += aiGenerateTextShortcode("iframe_hide_elements");
   output += aiGenerateTextShortcode("onload_show_element_only");
   output += aiGenerateTextShortcode("iframe_content_id");
   output += aiGenerateTextShortcode("iframe_content_styles");
   output += aiGenerateTextShortcode("change_iframe_links");
   output += aiGenerateTextShortcode("change_iframe_links_target");
   // resize content height
   output += aiGenerateTextShortcode("onload");
   output += aiGenerateRadioShortcode("onload_resize","false");  
   output += aiGenerateTextShortcode("onload_resize_delay");
   output += aiGenerateRadioShortcode("store_height_in_cookie","false");  
   output += aiGenerateTextShortcode("additional_height");
   output += aiGenerateRadioShortcode("onload_resize_width","false");  
   output += aiGenerateTextShortcode("resize_on_ajax");
   output += aiGenerateRadioShortcode("resize_on_ajax_jquery","true");  
   output += aiGenerateTextShortcode("resize_on_click");
   output += aiGenerateTextShortcodeWithDefault("resize_on_click_elements","a");  
   
   output += aiGenerateTextShortcode("resize_on_element_resize");
   output += aiGenerateTextShortcodeWithDefault("resize_on_element_resize_delay","250");  

   // tabs
   output += aiGenerateTextShortcode("tab_hidden");
   output += aiGenerateTextShortcode("tab_visible");
   // cross domain ....
   output += aiGenerateRadioShortcode("enable_external_height_workaround","false");  
   output += aiGenerateRadioShortcode("hide_page_until_loaded_external","false");  
   output += aiGenerateTextShortcode("pass_id_by_url");
   // additional files
   output += aiGenerateTextShortcode("additional_css");
   output += aiGenerateTextShortcode("additional_js");
   // include content directly
   output += aiGenerateTextShortcode("include_url");  
   output += aiGenerateTextShortcode("include_content");
   output += aiGenerateTextShortcode("include_height");
   output += aiGenerateTextShortcode("include_fade");
   output += aiGenerateRadioShortcode("include_hide_page_until_loaded","false");  
    
    output += "]";
    jQuery('#gen-shortcode').html(output);
    
   
}

/**
 * Generate a text shortcode with default
 */ 
function aiGenerateTextShortcodeWithDefault(field, defaultValue) {
    var output = "";
    var value = jQuery('#' + field);
    var val = value.val();
    if (value.length > 0 && val != '' && val != defaultValue) {
        output = field + '="' + val + '" ';
    }  
    return output;     
}

/**
 * Generate a text shortcode if the value is not empty or != 0
 */ 
function aiGenerateTextShortcode(field) {
    var output = "";
    var value = jQuery('#' + field);
    var val = value.val();
    if (value.length > 0 && val != '' && val != '0') {
        output = field + '="' + val + '" ';
    }    
    return output;     
}

/**
 * Generate a radio shortcode with default
 */ 
function aiGenerateRadioShortcode(field, defaultValue) {
    var output = "";
    var value = jQuery('input:radio[name='+field+']:checked');
    var val = value.val();
    if (value.length > 0 && val != defaultValue) {
        output += field + '="' + val + '" ';
    }
    return output;    
}

/**
 * Add a css class to the parents to enable that the iframe parents 
 * can be identified very easy. Is an is ist set ai-class-<id> is used.
 * Otherwise a-class-<number> with an increasing number is used.   
 */ 
function aiAddCssClassAllParents(element) {
  var parents = jQuery(element).parentsUntil( "html" );
  var ai_class= "ai-class-";
  for(var i = 0; i < parents.length; i++){
    var id = jQuery(parents[i]).attr('id');
    if (typeof id !== 'undefined') {
      if (!(id.indexOf('ai-') == 0)) {
          jQuery(parents[i]).addClass(ai_class + id);
      }
    } else {
      jQuery(parents[i]).addClass(ai_class + i);
    } 
  }
}

function aiAutoZoomExternalHeight(id, width, height, responsive) {
    var parentWidth = aiAutoZoomExternal(id, width, responsive);
    var zoomRatio = window["zoom_" + id] 
    var oldScrollposition = jQuery(document).scrollTop();
    var newHeight = Math.ceil(height*zoomRatio);
    jQuery('#ai-zoom-div-' + id).css("height", newHeight);
    jQuery(document).scrollTop(oldScrollposition);
 return parentWidth; 
} 


function aiAutoZoomExternal(id, width, responsive) {
   var obj =  document.getElementById(id);
   var jObj = jQuery("#" + id);
     
   if (responsive === 'true') {
    jObj.css('max-width', '100%'); 
   }    
   var iframeWidth = width;
   var parentWidth = aiGetParentIframeWidth(obj);
   var zoomRatio = parentWidth / iframeWidth;
   var zoomRatioRounded = Math.floor(zoomRatio * 100) / 100;
   
   if (zoomRatioRounded > 1) {
     zoomRatioRounded = 1;
   }
   
   setZoom(id, zoomRatioRounded);   
   window["zoom_" + id] = zoomRatioRounded;
   jObj.width(iframeWidth).css('max-width', 'none');
   return parentWidth;
}
function aiAutoZoom(id, responsive) { 
   var obj =  document.getElementById(id); 
   obj.width = 1; // set to 1 because otherwise the iframe does never get smaller. 
   var iframeWidth = aiGetIframeWidth(obj);
   obj.width = iframeWidth + 'px';  
   var parentWidth = aiAutoZoomExternal(id, iframeWidth, responsive);  
   aiResizeIframe(obj, false);
   return parentWidth;   
}

/**
 * Set the zoom div settings dynamically.
 */ 
function setZoom(id, zoom) {

  var obj = jQuery('#' + id);

  if (aiIsIe8 === true) {
    obj.css('-ms-zoom', zoom);
  }

  obj.css({
    '-ms-transform': 'scale(' + zoom + ')',
    '-moz-transform': 'scale(' + zoom + ')',
    '-o-transform': 'scale(' + zoom + ')',
    '-webkit-transform': 'scale(' + zoom + ')',
    'transform': 'scale(' + zoom + ')'
  });
}

function resetAiSettings() {
  jQuery('#action').val("reset");
}

function aiCheckInputNumber(inputField) {
    inputField.value = inputField.value.split(' ').join('');
    var f = inputField.value;
    if (inputField.value == '') return;
    var match = f.match(/^(\-){0,1}([\d\.]+)(px|%|em|pt)?$/);
    if (!match) {
        alert("Please check the value you have entered. Only numbers with a dot or with an optional px, %, em or pt are allowed.");
        setTimeout(function(){inputField.focus();}, 10);
    }
}

function setAiScrollposition() {
  var scrollposition = jQuery(document).scrollTop();   
  jQuery("#scrollposition").val(scrollposition);
}

function resetShowPartOfAnIframe(id) {
  jQuery("#" + id).css("top","0px").css("left","0px").css("position","static");
  jQuery("#ai-div-" + id).css("width","auto").css("height","auto").css("overflow","auto").css("position","static");
}

/**
 * main ready function that calls all generated callbacks. 
 * Add dynamically created functions that should be loaded 
 * when the page is read to aiReadyCallbacks 
 */ 
jQuery(document).ready(function() {
    jQuery.each(aiReadyCallbacks, function(index, callback){
      callback(); 
    });
});

/*
playback timings (ms):
  LoadShardBlock: 214.828 (3)
  esindex: 0.005
  captures_list: 245.793
  CDXLines.iter: 11.056 (3)
  PetaboxLoader3.datanode: 227.895 (4)
  exclusion.robots.fetch: 0.202 (4)
  exclusion.robots: 0.685
  exclusion.robots.policy: 0.241
  RedisCDXSource: 17.007
  PetaboxLoader3.resolve: 130.109
  load_resource: 178.704
*/