function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		thermocon_over = newImage("gfx/thermocon-over.jpg");
		texceil_over = newImage("gfx/texceil-over.jpg");
		thermoform_over = newImage("gfx/thermoform-over.jpg");
		technical_over = newImage("gfx/technical-over.jpg");
		contractor_over = newImage("gfx/contractor-over.jpg");
		eternal_over = newImage("gfx/eternal-over.jpg");
		contact_aspx_over = newImage("gfx/contact.aspx-over.jpg");
		preloadFlag = true;
	}
}


function NewWindow(mypage, myname, w, h, scroll, menubar) {
  var winl = (screen.width - w) / 2;
  var wint = (screen.height - h) / 2;
  winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars='+scroll+',menubar='+menubar+',resizable'
  win = window.open(mypage, myname, winprops)
  if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); }
}