var subnav=new Array('home','facts','testing','fun','contact');
var subnavon="";
	
	if (document.images) {
	 
	 for (i=0;i<subnav.length;i++)    {
	   eval(subnav[i]+"off = new Image();")
	   eval(subnav[i]+"off.src = '/images/sublevel/nav/n_"+subnav[i]+"_off.gif';")
	   eval(subnav[i]+"on = new Image();")
	   eval(subnav[i]+"on.src = '/images/sublevel/nav/n_"+subnav[i]+"_on.gif';")
	 }
	}
	
	function imgOn(imgName) {
	  if (document.images) {
	  	if(imgName != subnavon) {
			document[imgName].src = eval(imgName + "on.src");
			}
		}
	}
	
	function imgOff(imgName) {
	  if (document.images) {
	  	if(imgName != subnavon) {
			document[imgName].src = eval(imgName + "off.src");
			}
		}
	}