function hide_div(objName_){
	var NN 	 = (document.layers ? true : false);
	var hideName = (NN ? 'hide' : 'hidden');
	var showName = (NN ? 'show' : 'visible');
	if (navigator.appName == "Netscape"){
		document.getElementById(objName_).style.visibility=hideName
		}
	else	{
		document.all[objName_].style.visibility = hideName;
		}	
}
function show_div(objName_){
	var NN 	 = (document.layers ? true : false);
	var hideName = (NN ? 'hide' : 'hidden');
	var showName = (NN ? 'show' : 'visible');
	if (navigator.appName == "Netscape"){
		document.getElementById(objName_).style.visibility=showName
		}
	else	{
		document.all[objName_].style.visibility = showName;
		}	
}