homeOn = new Image(); homeOn.src = "on/home.gif";
pressOn = new Image(); pressOn.src = "on/press.gif";
onlineOn = new Image(); onlineOn.src = "on/online.gif";
offlineOn = new Image(); offlineOn.src = "on/offline.gif";
preheaterOn = new Image(); preheaterOn.src = "on/preheater.gif";
explosiveOn = new Image(); explosiveOn.src = "on/explosive.gif";
surfaceprepOn = new Image(); surfaceprepOn.src = "on/surfaceprep.gif";
hydrocuttingOn = new Image(); hydrocuttingOn.src = "on/hydrocutting.gif";
vacuumOn = new Image(); vacuumOn.src = "on/vacuum.gif";
hydrodemolitionOn = new Image(); hydrodemolitionOn.src = "on/hydrodemolition.gif";
customOn = new Image(); customOn.src = "on/custom.gif";
contactOn = new Image(); contactOn.src = "on/contact.gif";
employmentOn = new Image(); employmentOn.src = "on/employment.gif";

function imgOn(imgName) {
	document [imgName].src = eval((imgName) + "On.src");
}
function imgOff(imgName) {
	document [imgName].src = "off/" + (imgName) + ".gif";
}