function chgLookType(obj){
	var strName = 'strUserID';
	var value = 1;
			
	if(obj.username.value.search(/@/) > -1){
		strName = 'strEmail';
		value = 2;
	} 
	obj.username.name = strName;
	obj.elements.strLookType.value = value;
}

//unserialize the query string
var _GET = {};
var u = location.search.substr(1).split("&");
if(u != ''){
	for(var g = 0; g < u.length; g++) {
			var vars = u[g].split('=');
			eval('_GET.'+vars[0]+' = "'+unescape(vars[1])+'"');
	}
}

//build query strings
function BQS(){var arr = [];for(var name in _GET){arr.push(name+'='+_GET[name]);}return '?'+ arr.join('&');}