function hideAll(layer)
{
lrs = document.all?document.all:document.getElementById?document.getElementsByTagName:null;

	if( lrs!=null ){
		for( i = 0; i < lrs.length; i++ ){
			if( lrs[i].name != null && lrs[i].name != layer && lrs[i].name.indexOf("t") > -1 ){
				lrObj = document.all?document.all[i]:document.getElementById(i);
				lrObj.style.display = "none"
			}
		}
	}
}