function isArray(obj)
{
	return ((obj.length) && (typeof(obj) == "object")) ? true : false;
};

function objById(sId)
{
	return IsDOM ? document.getElementById(sId) : IsIE ? document.all[sId] : document.layers[sId];;
};
function getSiblingElementsByTagName(oParent, sTag)
{
	lAll = oParent.getElementsByTagName(sTag);
	//alert (lAll.length);
	var lSiblings = new Array;
	for (i=0; i < lAll.length; i++)
	{
		if (lAll[i].parentNode == oParent) 
		{
			lSiblings.push(lAll[i]);
		}
	}
	//alert (lSiblings.length);
	return lSiblings;	
};