var isDHTML = 0;
var isID = 0;
var isAll = 0;
var isLayers = 0;


if (document.getElementById) {isID = 1; isDHTML = 1;}
else {
if (document.all) {isAll = 1; isDHTML = 1;}
else {
browserVersion = parseInt(navigator.appVersion);
if ((navigator.appName.indexOf('Netscape') != -1) && (browserVersion == 4)) {isLayers = 1; isDHTML = 1;}
}}

function findDOM(objectID,withStyle) {
	if (withStyle == 1) {
		if (isID) { return (document.getElementById(objectID).style) ; }
		else { 
			if (isAll) { return (document.all[objectID].style); }
		else {
			if (isLayers) { return (document.layers[objectID]); }
		};}
	}
	else {
		if (isID) { return (document.getElementById(objectID)) ; }
		else { 
			if (isAll) { return (document.all[objectID]); }
		else {
			if (isLayers) { return (document.layers[objectID]); }
		};}
	}
}

function setVisibility(objectID, state) {
	var dom = findDOM(objectID, 1);
	dom.visibility = state;
}

function toggleVisibility(objectID) {
	var dom = findDOM(objectID, 1);
	state = dom.visibility;
	if ( state == 'hidden' || state == 'hide' )
		dom.visibility = 'visible';
	else {
		if ( state == 'visible' || state == 'show')
			dom.visibility = 'hidden';
		else dom.visibility = 'visiblie';
	}
}

function moveObjectTo(objectID, x, y) {
	var domStyle = findDOM(objectID, 1);
	domStyle.left = x; domStyle.top = y;
}

function moveObjectBy(objectID, deltaX, deltaY) {
	var domStyle = findDOM(objectID, 1);
	var dom = findDOM(objectID, 0);
	
	if (domStyle.pixelLeft) {
		domStyle.pixelLeft += deltaX;
		domStyle.pixelTop += deltaY;
	}
	else {
		if ( dom.offsetLeft != null ) {
			var plusLeft = dom.offsetLeft;
			var plusTop = domoffsetTop;
			domStyle.left = deltaX + plusLeft;
			domStyle.top = deltaY + plusTop;
		}
		else dom.moveyBy(deltaX, deltaY);
	}
}

function setClip(objectID, clipTop, clipRight, clipBottom, clipLeft) {
	var dom = findDOM(objectID, 1);
	if (dom.clip.left) {
		dom.clip.top = clipTop;
		dom.clip.right = clipRight;
		dom.clip.bottom = clipBottom;
		dom.clip.left = clipLeft;
	}
	
	dom.clip = 'rect(' + clipTop + ' ' + clipRight + ' ' + clipBottom + ' ' + clipLeft + ')';
}