var d=document;
ie = (d.all)? true : false;
nn4 = (d.layers)? true : false;
nn5 = (parseInt(navigator.appVersion)>=5)? true : false;
opera = (d.appName == "Opera" && parseInt(navigator.appVersion)>=4)? true : false;

function ChColor(which,color) {
                if (ie) { d.all[which].bgColor = color; }
                if (nn4) { d.layers[which+'div'].bgColor = color; }
                if (nn5 || opera) { d.getElementById(which).bgColor = color; }
}