var W3CDOM = (document.createElement() && document.getElementsByTagName());
window.onload = pinballEffect;
function pinballEffect()
{
    if (!W3CDOM) return;
	if (elmt == 'li'){
		var parentObj = document.getElementById("list-box");
		var allElements = parentObj.document.getElementsByTagName('li');
	}else{
		var allElements = document.getElementsByTagName('tr');
	}
    var originalBackgrounds=new Array();
    for (var i=0; i<allElements.length; i++)
    {
        if (allElements[i].className.indexOf('span') < 0)
        {
            allElements[i].onmouseover = mouseGoesOver;
            allElements[i].onmouseout = mouseGoesOut;
        }
    }
}

function mouseGoesOver()
{
    originalClassNameString = this.className;
    this.className += " hover";
}

function mouseGoesOut()
{
    this.className = originalClassNameString;
}
pinballEffect();