window.onload = function ()
{
	var els = getElementsByClassName(document, 'div', 'thumb');
	for (var i = 0; i < els.length; i++)
	{
		els[i].onmouseover = function () { rollOver(this); }
		els[i].onmouseout = function () { rollOut(this); }
	}
}

function getElementsByClassName(oElm, strTagName, strClassName){
	var arrElements = (strTagName == "*" && oElm.all)? oElm.all : oElm.getElementsByTagName(strTagName);
	var arrReturnElements = new Array();
	strClassName = strClassName.replace(/\-/g, "\\-");
	var oRegExp = new RegExp("(^|\\s)" + strClassName + "(\\s|$)");
	var oElement;
	for(var i=0; i<arrElements.length; i++){
		oElement = arrElements[i];      
		if(oRegExp.test(oElement.className)){
			arrReturnElements.push(oElement);
		}   
	}
	return (arrReturnElements)
}

function rollOver(el)
{
	if (el.style)
	{
		el.style.backgroundColor = '#fff';
		if (el.childNodes.length > 0)
		{
			for (var i = 0; i < el.childNodes.length; i++)
			{
				if (el.childNodes[i].style)
				{
					el.childNodes[i].style.color = '#000';
				}
			}
		}
	}
}

function rollOut(el)
{
	if (el.style)
	{
		el.style.backgroundColor = '';
		if (el.childNodes.length > 0)
		{
			for (var i = 0; i < el.childNodes.length; i++)
			{
				if (el.childNodes[i].style)
				{
					el.childNodes[i].style.color = '#fff';
				}
			}
		}
	}
}