window.addOnLoadEventListener = _windowAddOnLoadEventListener;
window.onload = _windowOnLoadHandler;
function _windowAddOnLoadEventListener(fun)
{
	//alert(window.onloadListeners);
	if(window.onloadListeners == undefined)
	{
		window.onloadListeners = new Array();
	}
	window.onloadListeners.push(fun);
}
function _windowOnLoadHandler()
{
	var i;
	if(window.onloadListeners == undefined)
	{
		return;
	}
	for(i=0; i<window.onloadListeners.length; i++)
	{
		window.onloadListeners[i]();
	}
}
function getElementsByAttr(prnt, attr, val)
{
	var result = new Array();
	var i;
	var j;
	var tempObj;
	var subRes;
	for(i=0; i<prnt.childNodes.length; i++)
	{
		tempObj = prnt.childNodes[i];
		if(tempObj.getAttribute)
		{
			if(tempObj.getAttribute(attr) == val)
			{
				result.push(tempObj);
			}
		}
		subRes = getElementsByAttr(tempObj, attr, val);
		for(j in subRes)
		{
			result.push(subRes[j]);
		}
	}
	return result;
}
function getElementsByClass(prnt, val)
{
	var result = new Array();
	var i;
	var j;
	var tempObj;
	var subRes;
	for(i=0; i<prnt.childNodes.length; i++)
	{
		tempObj = prnt.childNodes[i];
		if(tempObj.getAttribute)
		{
			if(tempObj.className == val)
			{
				
				result.push(tempObj);
			}
		}
		
		subRes = getElementsByClass(tempObj, val);
		for(j in subRes)
		{
			result.push(subRes[j]);
		}
	}
	return result;
}

function getElementsByTagName(prnt, val)
{
	var result = new Array();
	var i;
	var j;
	var tempObj;
	var subRes;
	for(i=0; i<prnt.childNodes.length; i++)
	{
		tempObj = prnt.childNodes[i];
		if(tempObj.getAttribute)
		{
			if(tempObj.tagName == val)
			{
				
				result.push(tempObj);
			}
		}
		
		subRes = getElementsByTagName(tempObj, val);
		for(j in subRes)
		{
			result.push(subRes[j]);
		}
	}
	return result;
}

function setOpacity(obj, val)
{
	if(typeof obj.style.opacity == 'string')
	{
		obj.style.opacity = val;
	}
	else
	{
		val*=100;
		obj.style.filter = "progid:DXImageTransform.Microsoft.Alpha(opacity="+val+")";
	}
}
function TabBlock(_link, _content, _defaultDisplay, _altDisplay)
{
	var lnk = document.getElementById(_link);
	var cont = document.getElementById(_content);
	var defDspl = _defaultDisplay;
	var altDspl = _altDisplay;
	if(lnk == null || cont == null)
	{
		return false;
	}
	cont.style.display = defDspl;
	lnk.onclick = _lnkClickHandler;
	
	function _lnkClickHandler()
	{
		if(cont.style.display == defDspl)
		{
			cont.style.display = altDspl;
		}
		else
		{
			cont.style.display = defDspl;
		}
	}
}