var NS4DOM = document.layers ? true:false;
var IEDOM = document.all ? true:false;
var W3CDOM = document.getElementById ? true:false;

function getObject(id) {
	if (NS4DOM) ref="document."+id;
	else if (IEDOM) ref=id;
	else if (W3CDOM) ref="document.getElementById('"+id+"')";
	var object=eval(ref);
	return object;
}

function placeIt(id, x, y) {
	var object=getObject(id);
	if (NS4DOM) object.moveTo(x, y)
	else if (IEDOM || W3CDOM) {
		object.style.left=x;
		object.style.top=y;
	}
}



function showIt(id) {
	var object=getObject(id);
	if (NS4DOM) object.visibility="show";
	else if (IEDOM || W3CDOM) object.style.visibility="visible";
}

function hideIt(id) {
	var object=getObject(id);
	if (NS4DOM) object.visibility="hide";
	else if (IEDOM || W3CDOM) object.style.visibility="hidden";
}
function winWidth() {
	if (window.innerWidth) return window.innerWidth;
	else if (document.documentElement) return document.documentElement.offsetWidth;
	else if (document.body.clientWidth) return document.body.clientWidth;
}

function winHeight() {
	if (window.innerHeight) return window.innerHeight;
	else if (document.documentElement) return document.documentElement.offsetHeight;
	else if (document.body.clientHeight) return document.body.clientHeight;
}