<!--

// rollover script

var oldSrc;
 
function preloadimages() {
	 var num = document.images.length;
	 var img,posn,temp,orig,newsrc;
	 var preload = new Array(); 
	 for(var i = 0; i<num; i++) {
	 	img = document.images[i].src;
	 	posn = img.indexOf("nav_");
	 		if(posn > -1){
			 dot = img.lastIndexOf(".");
			 temp = img.substr(dot,img.length);
			 orig = img.substr(0,dot);
			 newsrc = orig + "_over" + temp;
	 
	 	 preload[i] = new Image();
	     preload[i].src = newsrc;
		 }
 	}
 } 

function getSrc(n){
    img = n.toString(); 
 	eval("n = document." + img + ".src"); 
 	if(n.indexOf("_over")< 0){
 		dot = n.lastIndexOf(".");
 		temp = n.substr(dot,n.length).toString();
		orig = n.substr(0,dot).toString();
		newsrc = orig + "_over" + temp;
	 	newsrc = newsrc.toString();
 	return newsrc;
 	}
	else{return n;}
 }

    function swap(imgname) {
       n = arguments[0].toString();
   		eval("oldSrc = document." + n + ".src");
   		old = n;
  		eval("document." + n + ".src=getSrc('" + imgname + "')");
 }

function restore(){
      eval("document." + img + ".src=oldSrc");
 
 }

 

// -->