function imgOn(sName) {
	if(document.images) {
		document[sName].src = eval(sName + "_on.src");
		}
	}

function imgOff(sName) {
	if(document.images) {
		document[sName].src = eval(sName + "_off.src");
		}
	}
	
// top icon nav
function iconsOn(imgName) { 
       if (document.images) { 
           document[imgName].src = eval(imgName + "_on.src"); 
           document["holder"].src = eval(imgName + "_other.src"); 
       } 
} 

function iconsOff(imgName) { 
       if (document.images) { 
           document[imgName].src = eval(imgName + "_off.src"); 
           document["holder"].src = "images/spacer.gif"; 
       } 
}