var http = getHTTPObject();
 function getHTTPObject()
  {
        var xmlhttp;
     if (!xmlhttp && typeof XMLHttpRequest != 'undefined')
  	 {
       try {
             xmlhttp = new XMLHttpRequest();
           } catch (e)
  				  {
  					 xmlhttp = false;
  			    }
      }
  		else
  		 {
  		    try{
  						xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
  					 }catch(e1)
  					 {
              xmlhttp = false;
  					 }
  		 }
       return xmlhttp;
  }
function doLogin(oForm)
	{		
		oForm.action = "checkLogin.php";
		oForm.submit();		
	}
		
function doSet()
{
	var oObj = document.getElementById("empty");
	if(screen.width == 1280 && screen.height ==1024)
	{
		oObj.style.width = "100px";			
	}
	if(screen.width == 1680 && screen.height ==1050)
	{
		oObj.style.width = "300px";			
	}
}