function mainmenu(){
$(" #nav ul ").css({display: "none"}); // Opera Fix
$(" #nav li").hover(function(){
		
		var pos = $(this).offset(); 
 		var width = $(this).find('ul:first').width();
		var height = $(this).find('ul:first').height();
 			//show the menu directly over the placeholder
		droppos = pos.top - height/2 +15;
		if(droppos < 270){
			droppos = 270;
		}
 		$(this).find('ul:first').css( { "left": (pos.left + 35) + "px", "top": droppos + "px" } );
//alert($(this).find('div.sub_nav_arrow:eq(0)').offset().top); 
		//$(this).find('div.sub_nav_arrow:eq(0)').css( { "top": (0 + 5) + "px" } );
		var arrowtop= height/2-20;
		$(this).find('div.sub_nav_arrow:eq(0)').css( { left: "94px" ,top: (pos.top+4) +"px" } );
		$(this).find('div.sub_nav_arrow:eq(0)').css({visibility: "visible",display: "none"}).fadeIn("slow");
		$(this).find('ul:first').css({visibility: "visible",display: "none"}).fadeIn("slow");
		},function(){
			$(this).find('ul:first').css({visibility: "hidden"});
			$(this).find('div.sub_nav_arrow:eq(0)').css({visibility: "hidden"});
		});
}



function loadPage(url){
	window.location.href = url;
}