function LayerMaster(Location,VisString) {
 //SET-UP INVERSES
 if (VisString == 'hidden') { var InverseVisString = 'visible'; }
 if (VisString == 'visible') { var InverseVisString = 'hidden'; }
 //DETECT BROWSER
 var browser = navigator.appName;
 //NETSCAPE NAVIGATOR VERSION
 if (browser == 'Netscape') {
 if (document.layers != null) {
 	document.layers[Location].visibility = VisString; 
	document.layers['original'].visibility = InverseVisString; }
 }
 //INTERNET EXPLORER VERSION
 if (browser == 'Microsoft Internet Explorer') {
 if (document.all != null) { 
	document.all[Location].style.visibility = VisString; 
	document.all['original'].style.visibility = InverseVisString; }
 }
}