//create global variables to hold info
var oImages = new Array()

//called from pages to preload rollover images 
function PreloadImages()    
{
	//preload images for each image name passed
	for (var i=0;i<arguments.length;i++)
	{
		oImages[arguments[i] + "Off"] = new Image()
		oImages[arguments[i] + "Off"].src = "graphics/as" + arguments[i] + "Off.gif"
		oImages[arguments[i] + "On"] = new Image()
		oImages[arguments[i] + "On"].src = "graphics/as" + arguments[i] + "On.gif"
	}
}  
    
function ImageSwap(name)
{
	if (document.images)
		document.images[name + "Image"].src = oImages[name + "On"].src;
}
	
function ImageReturn(name)
{
	if (document.images)
		document.images[name + "Image"].src = oImages[name + "Off"].src;
}