if (document.images) {
			ashraeOFF = new Image
			ashraeON = new Image
			
			
			ashraeOFF.src = "/images/ashrae-OFF.jpg"
			ashraeON.src = "/images/ashrae-ON.jpg"
			}
			
			else {
			ashraeOFF.src = ""
			ashraeON.src = ""
			}
			
			function chgImgAshrae(imgField,newImg) 
			{
				if (document.images) {
				document[imgField].src= eval(newImg + ".src")
				}
			}