$(document).ready(function()
{

	var nav_act_src = "";

	// Find the original active menu entry. Because this will never we changed by hover
	$("#header li img").each(function()
	{
		var src = $(this).attr("src");
		if( src.search(/-act/) != -1 )
		{
			nav_act_src = src;
		}
	});


	/*********************
	 * Hover of main nav
	 *********************/
	$("#header li img").hover(function () {
		var src = $(this).attr("src");

		if ( (src != nav_act_src) && (src.search(/-act/) == -1) )
		{
			src = src.replace(/\.gif/,"-act.gif");
			$(this).attr("src", src);
		}

      },
      function () {
		var src = $(this).attr("src");
       	if ( (src != nav_act_src) &&  (src.search(/-act/) != -1) )
		{
			src = src.replace(/-act\.gif/,".gif");
			$(this).attr("src", src);
		}
      }
    );
});