// Mega Drop Down Menu by Sho Tanaka
$(document).ready(function() {
   function megaHoverOver() {
    
      //Odlisna nastaveni pruhlednosti pro IE
      var fade_to_value = 1;
      if ($.browser.msie && $.browser.version > 6) {
         fade_to_value = 0.8;
      }

      $(this).find(".sub").stop().fadeTo('fast', fade_to_value).show(); //Find sub and fade it in
      (function($) {
         //Function to calculate total width of all ul's
         jQuery.fn.calcSubWidth = function() {
            rowWidth = 0;
            //Calculate row
            $(this).find("ul").each(function() { //for each ul...
                rowWidth += $(this).width(); //Add each ul's width together
            });
         };
      })(jQuery); 

      if ( $(this).find(".row").length > 0 ) { //If row exists...

        var biggestRow = 0;	

        $(this).find(".row").each(function() {	//for each row...
            $(this).calcSubWidth(); //Call function to calculate width of all ul's
            //Find biggest row
            if(rowWidth > biggestRow) {
                biggestRow = rowWidth;
            }
         });

         $(this).find(".sub").css({'width' :biggestRow}); //Set width
         $(this).find(".row:last").css({'margin':'0'});  //Kill last row's margin

      } else { //If row does not exist...

         $(this).calcSubWidth();  //Call function to calculate width of all ul's
         $(this).find(".sub").css({'width' : rowWidth}); //Set Width

      }
   }

   //On Hover Out
   function megaHoverOut() {
      $(this).find(".sub").stop().fadeTo('fast', 0, function() { //Fade to 0 opactiy
         $(this).hide();  //after fading, hide it
      });
   }

   //Set custom configurations
   var config = {
      sensitivity: 2, // number = sensitivity threshold (must be 1 or higher)
      interval: 100, // number = milliseconds for onMouseOver polling interval
      over: megaHoverOver, // function = onMouseOver callback (REQUIRED)
      timeout: 500, // number = milliseconds delay before onMouseOut
      out: megaHoverOut // function = onMouseOut callback (REQUIRED)
   };

   $("ul#topnav li .sub").css({'opacity':'0.6'}); //Fade sub nav to 0 opacity on default
   $("ul#topnav li").hoverIntent(config); //Trigger Hover intent with custom configurations

});