//<a href="#" onClick=dropContent('cntnt01','cntnt02','cntnt03','cntnt04','cntnt05')>
//check browser
	var br;
	bName = navigator.appName;
	bVer = parseInt (navigator.appVersion);
  	if (bName == "Microsoft Internet Explorer" && bVer >= 4) br = "e";
  	else br = "n" ;
//end check browser
function dropContent(){
	var args = dropContent.arguments;
	//
	for (var i=0; i<args.length; i++) {
		if (br == "e") {
			obj = eval("document.all."+args[i]+".style");
		} else if (br == "n") {
			obj = document.getElementById(args[i]).style;
		}
		//SWITCH CONTENT
		if(i == 0){
			obj.display = '';
		}else{
			obj.display = 'none';
		}
	}
}
function dropAllContent(){
	var args = dropAllContent.arguments;
	//
	for (var i=0; i<args.length; i++) {
		if (br == "e") {
			obj = eval("document.all."+args[i]+".style");
		} else if (br == "n") {
			obj = document.getElementById(args[i]).style;
		}
		//SWITCH CONTENT
		obj.display = '';
	}
}