/**
 * @package WordPress
 * @subpackage Custom_main_javascript
 */
//alert(navigator.userAgent);

  // wrap as a jQuery plugin and pass jQuery in to our anoymous function
  (function ($) {
	  $.fn.cross = function (options) {
		 return this.each(function (i) { 
			 // cache the copy of jQuery(this) - the start image
			 var $$ = $(this);
			 
			 // get the target from the backgroundImage + regexp
			 var target = $$.css('backgroundImage').replace(/^url|[\(\)'"]/g, '');

			 // nice long chain: wrap img element in span
			 $$.wrap('<span style="position: relative;"></span>')
				// change selector to parent - i.e. newly created span
				.parent()
				// prepend a new image inside the span
				.prepend('<img>')
				// change the selector to the newly created image
				.find(':first-child')
				// set the image to the target
				.attr('src', target);

			 // the CSS styling of the start image needs to be handled
			 // differently for different browsers
			 //this.offsetTop
			 if ($.browser.msie && $.browser.version >= 8.0) {
				$$.css({
				  'position' : 'absolute', 
				  'left' : 0,
				  'background' : '',
				  'top' :-(this.height)
				});		
			 } else if ($.browser.msie) {
				$$.css({
				  'position' : 'absolute', 
				  'left' : 0,
				  'background' : '',
				  'top' : 0

				});
			 } else if ($.browser.mozilla) {
				$$.css({
				  'position' : 'absolute', 
				  'left' : 0,
				  'background' : '',
				  'top' : this.offsetTop
				});
			 } else if ($.browser.opera && $.browser.version < 9.5) {
				// Browser sniffing is bad - however opera < 9.5 has a render bug 
				// so this is required to get around it we can't apply the 'top' : 0 
				// separately because Mozilla strips the style set originally somehow...				
				$$.css({
				  'position' : 'absolute', 
				  'left' : 0,
				  'background' : '',
				  'top' : "0"
				});
			 } else { // Safari
				$$.css({
				  'position' : 'absolute', 
				  'left' : 0,
				  'background' : ''
				});
			 }

			 // similar effect as single image technique, except using .animate 
			 // which will handle the fading up from the right opacity for us
			 $$.hover(function () {
				$$.stop().animate({
				  opacity: 0
				}, 250);
			 }, function () {
				$$.stop().animate({
				  opacity: 1
				}, 250);
			 });
		 });
	  };
	  
  })(jQuery);
  
  // note that this uses the .bind('load') on the window object, rather than $(document).ready() 
  // because .ready() fires before the images have loaded, but we need to fire *after* because
  // our code relies on the dimensions of the images already in place.
  $(window).bind('load', function () {
	  $('img.fade').cross();
  });

//example <img class="fade" src="images/who.jpg" style="background: url(images/who_ro.jpg);" alt="Who we are" />