function roomdetail(d)
{
	var width=730;
	var height=492;
	var w =(screen.width-width)/2;

	var h = (screen.height-height)/2;
	
	window.open('room_detail.php?room_id='+d,"_blank","height="+ height +",width="+ width +", top="+ h +", left="+ w +", toolbar=no, menubar=no, scrollbars=1, resizable=no,location=no, status=no");
}

function CheckNumber()
{
    var k = window.event.keyCode;   

    if ((k==46)||(k==8)||(k==189)||(k==109)||(k==190)||(k==110)|| (k>=48 && k<=57)||(k>=96 && k<=105)||(k>=37 && k<=40)) 
    {
	
	}
    else if(k==13)
	{
         window.event.keyCode = 9;
	}
    else
	{
         window.event.returnValue = false;
	}
}

//限定文本框的长度
//boj:文本框对象，intLength:文本的最大长度
function MaxLength(obj,intLength)
{
	var keyNum = window.event.keyCode; 
	if(keyNum != 8 && keyNum != 46 && keyNum != 37 && keyNum != 38 && keyNum != 39 && keyNum != 40)
	{
		if(obj.value.length > intLength)
		{
			obj.value=obj.value.substring(0,intLength);
			window.event.returnValue = false;
			alert("最大长度为"+intLength.toString());
		}
	}
}


function NullToZero(obj)
{
	if(obj.value.replace(' ') == "")
	{
		obj.value = "0";
	}
}

//指定控件的焦点
function setFocus(objID)
{
	var esrc = document.getElementById(objID);
	if(esrc == null)
	{
	   esrc = event.srcElement;
	}
	var rtextRange =esrc.createTextRange();
	
	var sel=rtextRange.duplicate();
	
	sel.moveStart('character',0); //esrc.value.length
	//sel.setEndPoint("EndToStart",rtextRange); 	
	rtextRange.collapse(true);

	sel.select();
	
}