function OpenWin(url, winName, width, height, scrolls)
{
    xposition = 0;
    yposition = 0;
    if ((parseInt(navigator.appVersion) >= 4))
    {
        xposition = (screen.width - width) / 2;
        yposition = (screen.height - height) / 2;
    }
    theproperty = "width=" + width + ",height=" + height +
        ",fullscreen=0,location=0,menubar=0,resizable=0,scrollbars=" + scrolls
        + ",status=0,titlebar=0,toolbar=0,hotkeys=0,screenx=" + xposition +
        ",screeny=" + yposition + ",left=" + xposition + ",top=" + yposition;
    window.open(url, winName, theproperty);
}

function exchange(obj, txts, act)
{
    var ExaObj = document.getElementById('exa');
    var ExbObj = document.getElementById('exb');
    if (ExaObj)
    {
        if (ExaObj.value == '')
            ExaObj.value = act;
        else
        {
            if (ExaObj.value == act)
                ExaObj.value = '';
            else
                ExbObj.value = act;
        }
    }
}


//鼠标经过
document.onmouseover=ButtonOnMouseOver
document.onmouseout=ButtonOnMouseOut
function ButtonOnMouseOver(){
	try{
		if ((event.srcElement.type=="button")||(event.srcElement.type=="submit")||(event.srcElement.type=="reset"))
		{
			switch(event.srcElement.className)
			{
				case "button01-out" :
					event.srcElement.className="button01-over"
					break
				case "button02-out" :
					event.srcElement.className="button02-over"
					break
			}
		}
	}catch(exception){}
}
//鼠标离开
function ButtonOnMouseOut()
{
	try{
		if ((event.srcElement.type=="button")||(event.srcElement.type=="submit")||(event.srcElement.type=="reset"))
		{
			switch(event.srcElement.className)
			{
				case "button01-over" :
					event.srcElement.className="button01-out"
					break
				case "button02-over" :
					event.srcElement.className="button02-out"
					break
			}
		}
	}catch(exception){}
}

function createAjax(){
    if(window.XMLHttpRequest){
      return new XMLHttpRequest();
    }
    else if(window.ActiveXObject){
      var os=["MSXML2.XMLHttp.5.0","MSXML2.XMLHttp.4.0","MSXML2.XMLHttp.3.0","MSXML2.XMLHttp","Microsoft.XMLHTTP"];
      var _xmlhttp;
      for(var i=0;i<os.length;i++){
        try{
          _xmlhttp=new ActiveXObject(os[i]);
          return _xmlhttp;
        }
        catch(e){}
      }
    }
 }
 
function selectAllCheckBox(obj)
{
	if(obj.length)
	{
		for(var i=0;i<obj.length;i++)
		{
			obj[i].checked=!obj[i].checked
		}
	}else{
		
		obj.checked=!obj.checked
	}
}