function newImg(imgName, imgObjName) {
   if (ready) document.images[imgName].src=eval(imgObjName + ".src");
   return true;
}

function chgtxt(obj,linkid,linkcolor) {
	if(document.getElementById) {
		document.getElementById(linkid).style.color=linkcolor
	}
}

function showLayer(layerName) {
document.getElementById(layerName).style.visibility="visible"; 
}

function hideLayer(layerName) { 
document.getElementById(layerName).style.visibility="hidden";
}