// Cross Browser DOM
// copyright Stephen Chapman, 4th Jan 2005
// you may copy this code but please keep the copyright notice as well
var aDOM = 0, ieDOM = 0, nsDOM = 0; 
var stdDOM = document.getElementById;

if (stdDOM) 
    aDOM = 1; 
else 
    {
	ieDOM = document.all; 
	if (ieDOM) 
	    aDOM = 1; 
	else 
	    {
		var nsDOM = ((navigator.appName.indexOf('Netscape') != -1)&& (parseInt(navigator.appVersion) ==4)); 
		if (nsDOM) 
		    aDOM = 1;
	    }
    }

function xDOM(objectId, wS) 
{
    if (stdDOM) 
	return wS ? document.getElementById(objectId).style:document.getElementById(objectId);
    if (ieDOM) 
	return wS ? document.all[objectId].style: document.all[objectId];
    if (nsDOM) 
	return document.layers[objectId];
}                       
    
    
// More Object Functions
// copyright Stephen Chapman, 18th Jan 2005
// you may copy these functions but please keep the copyright notice as well
function setObjVis(objectID,vis) 
{
    var objs = xDOM(objectID,1); 
    objs.visibility = vis;
} 

function toggleObjVis(objectID) 
{
    var objs = xDOM(objectID,1); 
    var vis = objs.visibility;  
    objs.visibility = (vis == "visible" || vis == "show") ? 'hidden' : 'visible';
} 

function moveObjTo(objectID,x,y) 
{
    var objs = xDOM(objectID,1); 
    objs.left = x; 
    objs.top = y;
}

function moveObjBy(objectID,x,y) 
{
    var obj = xDOM(objectID,0);
    var objs = xDOM(objectID,1); 
    if (obj.offsetLeft != null) 
    {	
	var l = obj.offsetLeft; 
	var t = obj.offsetTop; 
	objs.left = l+x; 
	objs.top = t+y;
    } 
    else
	if (objs.pixelLeft != null) 
	{
	    objs.pixelLeft += x; 
	    objs.pixelTop += y;
	} 
	else 
	    obj.moveBy(x,y);
}

function moveObjLayer(objectID,z) 
{
    var objs = xDOM(objectID,1); 
    objs.zIndex = z;
}

// Object Functions
// copyright Stephen Chapman, 4th Jan 2005
//  you may copy these functions but please keep the copyright notice as well
function objWidth(objectID)
{
    var obj = xDOM(objectID,0); 
    if(obj.offsetWidth) 
	return obj.offsetWidth; 
    if (obj.clip) 
	return obj.clip.width; 
    return 0;
}

function objHeight(objectID) 
{
    var obj = xDOM(objectID,0); 
    if(obj.offsetHeight) 
	return obj.offsetHeight; 
    if (obj.clip) 
	return obj.clip.height; 
    return 0;
}

function objLeft(objectID) 
{
    var obj = xDOM(objectID,0);
    var objs = xDOM(objectID,1); 
    if(objs.left) 
	return objs.left; 
    if (objs.pixelLeft) 
	return objs.pixelLeft; 
    if (obj.offsetLeft) 
	return obj.offsetLeft; 
    return 0;
} 

function objTop(objectID) 
{
    var obj = xDOM(objectID,0);
    var objs = xDOM(objectID,1); 
    if(objs.top) 
	return objs.top; 
    if (objs.pixelTop) 
	return objs.pixelTop; 
    if (obj.offsetTop) 
	return obj.offsetTop; 
    return 0;
} 

function objRight(objectID) 
{
    return objLeft(objectID)+objWidth(objectID);
} 

function objBottom(objectID) 
{
    return objTop(objectID)+objHeight(objectID);
} 

function objLayer(objectID) 
{
    var objs = xDOM(objectID,1); 
    if(objs.zIndex) 
	return objs.zIndex; 
    return 0;
} 

function objVisible(objectID) 
{
    var objs = xDOM(objectID,1); 
    if(objs.visibility == 'hide' || objs.visibility == 'hidden') 
	return 'hidden'; 
    return 'visible';
}