function $(x){return document.getElementById(x);}
		function objectSwap(){;}
		function attachRollover(img,click,ext){
			if(!ext)ext='gif';
			img.onmouseout=function(){this.src=this.src.slice(0,this.src.length-6)+'-l.'+ext;}
			img.onmouseover=function(){this.src=this.src.slice(0,this.src.length-6)+'-h.'+ext;}
			if(click)img.onmousedown=function(){this.src=this.src.slice(0,this.src.length-6)+'-a.'+ext;}
		}
		
		
		//preload nav imgs:
		var imgs=[];
		var buttonimgs=['reservations','jump','logo'];
		var fileext=['.gif'];
		var imgexts=['l','h','a'];
		for(i in buttonimgs)for(j in imgexts){imgs[imgs.length]=new Image();imgs[imgs.length-1].src='/graphics/'+buttonimgs[i]+'-'+imgexts[j]+fileext;}
		var imgexts=['l','h'];
		var fileext=['.gif'];
		for(i in navimgs)for(j in imgexts){imgs[imgs.length]=new Image();imgs[imgs.length-1].src='/menuimg/'+navimgs[i]+'-'+imgexts[j]+fileext;}
		
		function loadRollovers(){
			attachRollover($("reservations"),true,'gif');
			attachRollover($("jump"),false,'gif');
			attachRollover($("logo"),false,'gif');
			var a=$('mainmenu').getElementsByTagName('img');
			for(var i=0;i<a.length;i++)attachRollover(a[i]);
			var a=$('mainmenu').getElementsByTagName('li');
			for(var i=0;i<a.length;i++)a[i].onmouseover=function(){if($('mouseover'))$('mouseover').id='';this.id='mouseover'};
			for(var i=0;i<a.length;i++)a[i].onmousemove=function(){this.id='mouseover'};
			for(var i=0;i<a.length;i++)a[i].onmouseout=function(){this.id='';};
		}
		window.onload=function(){
			objectSwap();
		}