var ImageCounter = 0;
var RotTiming = 3000;
var Rotating = null;

function rollover(imgId) {
	if (document.images[imgId].src.indexOf("_off.") != -1)
		document.images[imgId].src = document.images[imgId].src.replace("_off.", "_over.");
	else
		document.images[imgId].src = document.images[imgId].src.replace("_over.", "_off.");
}

function productImg(NewImg, OldImg) {
	if (!OldImg) OldImg = "_grey"
	if (NewImg == "_schematic" && (Rotating)) OldImg = "_" + ImageCounter + OldImg;
//	alert(OldImg)
	if (document.images["mainImg"].src.indexOf(OldImg) != -1)
		document.images["mainImg"].src = document.images["mainImg"].src.replace(OldImg, NewImg);
	else
		document.images["mainImg"].src = document.images["mainImg"].src.replace(NewImg, OldImg);
}

function theproductRotation(ImageMax) {
	if (++ImageCounter > ImageMax) ImageCounter = 0;
	document.images["mainImg"].src = document.images["mainImg"].src.replace("_" + (ImageCounter==0?ImageMax:ImageCounter-1) + "_", "_" + ImageCounter + "_");
	Rotating = setTimeout("theproductRotation(" + ImageMax + ")", RotTiming);
}