/*
function dobutt(spot,wh) 
{
	var td = document.getElementById("butt" + spot);
	if(navigator.appName == "Microsoft Internet Explorer")
	{
		if (wh) {
			td.background = 'images/buttg_hbody.gif';
		} else {
			td.background = "images/buttgbody.gif";
		}
	}
	else
	{
		if (wh) {
			td.style.backgroundimage = url('images/buttg_hbody.gif');
		} else {
			td.style.backgroundimage = url("images/buttgbody.gif");
		}
	}
	return true;
}
 */
function dobutt(button, state){
    var li=button.src.length-5;
    button.src = button.src.substring(0, li) + state+'.png';
}