$(document).ready(function(){

 $("ul.dropdown li").hover(function(){
   $(this).addClass("hover");
   $('> .dir',this).addClass("open");
   $('ul:first',this).css('visibility', 'visible');
 },function(){
   $(this).removeClass("hover");
   $('.open',this).removeClass("open");
   $('ul:first',this).css('visibility', 'hidden');
 });
 

});

//Mouse Over
jQuery.preloadImages = function()
{
	for(var i = 0; i<arguments.length; i++)
	{
		jQuery("<img>").attr("src", arguments[i]);
	}
}

// preload images first (can run before page is fully loaded)
$.preloadImages("home_on.gif", "ourcompany_on.gif");
$(
	function()
	{
		// set up rollover
		$("img.rollover").hover(
			function()
			{
				this.src = this.src.replace("_off","_on");
			},
			function()
			{
				this.src = this.src.replace("_on","_off");
			}
		);
	}
)