var activeSub = "";
var stuck = "";
var offTimer = null;


function subOver(overSub) {

	clearTimeout(offTimer);
	hideSub(activeSub);
	showSub(overSub);

}

function showSub(sub) {
	document.getElementById(sub).style.visibility = "visible";
	activeSub = sub;
}



function subOut() {

	if(activeSub != "") {
		offTimer = setTimeout("hideSub(activeSub)", 400);
	}

}


function hideSub(sub) {
	
	if(sub != "") {
		document.getElementById(sub).style.visibility = "hidden";
		activeSub = "";
	}

}


function changeBG(td) {

	td.className = "subOver";

}

function changeBGback(td) {

	td.className = "sub";

}


function stick(image) {

	changeImages(image, "images/" + image + "-over.gif");
	stuck = image;
	
}