function $(id)
{
    return document.getElementById?document.getElementById(id):null;
}
function $F(id)
{
    if($(id)==null)
        return "";
    var v = $(id).value;  
    if(v!=undefined)
        return v;
    return "";
}
//新开窗口---------------------------------------------------------------------------------------------
function JsOpenwindow(width,height,Url)
{
	var left = screen.width/2 - width/2;
	var top  = screen.height/2 - height/2;	 
	window.open(Url,null,"width="+width+",height="+height+",left="+left+",top="+top+"\",scrollbars=yes,resizable=yes");
}
//模式窗口
function JsShowModalDialog(width,height,Url)
{	
	var sFeatures="dialogTop:1px;dialogLeft:1px;dialogHeight: " + height + "px; width: " + width + "px; help:No; resizable:No; status:No;";
	var rtnValue = window.showModalDialog(Url,null,sFeatures);
	return rtnValue;
	
}
//是否删除
function IsDoDelete()
{
	if(window.confirm("是否确认删除"))
	{
		return true;
	}
	return false;
}


//是否更新时间
function IsDoUpdateTime()
{
	if(window.confirm("是否确认更新时间"))
	{
		return true;
	}
	return false;
}


///控制显示
function ControlDis(objID)
{
	var objDis = document.all(objID);
	if(objDis.style.display=="none")
		objDis.style.display = "";
	else
		objDis.style.display = "none";
	
}
//更换当前行的格式
function ChangeTrClassName(obj,strOldClassName)
{		
	if(obj.className=="TrOnClick")
	{		
		obj.className = strOldClassName;
	}
	else
		obj.className = "TrOnClick";
}

//去除空格
function Trim(str)
{
   return str.replace(/^\s*|\s*$/g,"");
}
String.format = function()
{
    if( arguments.length == 0 )
        return null;
    var str = arguments[0];
    for(var i=1;i<arguments.length;i++)
    {
        var re = new RegExp('\\{' + (i-1) + '\\}','gm');
        str = str.replace(re, arguments[i]);
    }
    return str;
}
//Table------
function SwitchShow(tabid1,tableid1,tabid2,tableid2,className1,className2)
{
    var objTab1 = $(tabid1);
    var objTable1 = $(tableid1);
    
    var objTab2 = $(tabid2);
    var objTable2 = $(tableid2);
    
    objTab1.className = className1;
    objTable1.style.display = "";
    
    objTab2.className = className2;
    objTable2.style.display = "none";
    
}
//Favorite
function AddFavorite(url,title)
{
if (document.all)
{
window.external.addFavorite(url,title);
}
else if (window.sidebar)
{
window.sidebar.addPanel(title, url,"");
}
}