function $() {
	var elements = new Array();

	for (var i = 0; i < arguments.length; i++) {
		var element = arguments[i];
		if (typeof element == 'string')
		element = document.getElementById(element);

		if (arguments.length == 1)
		return element;

		elements.push(element);
	}

	return elements;
}
function changeRooms()
{
	document.getElementById("jians").innerHTML=$("ddlRooms").value;
	document.getElementById("zongs").innerHTML=$("ddlRooms").value*document.getElementById("dan").innerHTML;
	document.getElementById('zong').value=$("ddlRooms").value*document.getElementById("dan").innerHTML;
	var rooms = $("ddlRooms").value
	
	var ddlManss = $("ddlManss");
	if (ddlManss){
	    var len = ddlManss.options.length;
	    for(var i=len;i>=0;i--)
        {
		    ddlManss.remove(i);   
	    }
	    for (var i=0;i<rooms*2;i++){
	        ddlManss.options[i] = new Option(i+1,i+1);
	    }
	}
    $("txtLevel").value=$("ddlRooms").value
	if($("ddlManss").selectedIndex < $("ddlRooms").selectedIndex)
	{
		$("ddlManss").selectedIndex = $("ddlRooms").selectedIndex;
	}
}