// Link preloads

if (document.images)
{
	// off images

	    A = new Image; A.src = "images/services-home.jpg";
	    B = new Image; B.src = "images/services-home-oxygen.jpg";
	    C = new Image; C.src = "images/services-home-fire.jpg";
	    D = new Image; D.src = "images/services-home-enviro.jpg";
		
}

function hiLite(imgObjName) {
	if (document.images) {
		document.images["servImg"].src = eval(imgObjName + ".src")
	}
}

function revert() {
	if (document.images) {
		document.images["servImg"].src = A.src
	}
}