function cellOn(td) {
if(document.getElementById || (document.all && !(document.getElementById))) {
	td.style.backgroundColor="#f4f2f3";
	}
}

function cellOff(td) {
if(document.getElementById || (document.all && !(document.getElementById))) {
	td.style.backgroundColor="#ffffff";
	}
}

// add this code to the table cell tag
// <td onmouseover="cellOn(this);" onmouseout="cellOff(this);">