var xmlHttp
var shape
var size


/* show light size */
function showLightSize(sel)
{
xmlHttp=GetXmlHttpObject();
if (xmlHttp==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  } 
var url="getLightSize.asp";
shape = sel
url=url+"?shape="+shape;
url=url+"&sid="+Math.random();
//window.location = url
xmlHttp.onreadystatechange=stateChangeLights;
xmlHttp.open("GET",url,true);
xmlHttp.send(null);
}


/*submit*/
function showlightSZ(sel)
{
xmlHttp=GetXmlHttpObject();
if (xmlHttp==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  }
size = sel
var url="result_lights.asp";
url=url+"?shape="+shape;
url=url+"&size="+size;
window.location = url
}





function stateChangeLights() 
{ 
if (xmlHttp.readyState==4)
{ 
document.getElementById("txtLightSZ").innerHTML=xmlHttp.responseText;
}
}

function GetXmlHttpObject()
{
var xmlHttp=null;
try
  {
  // Firefox, Opera 8.0+, Safari
  xmlHttp=new XMLHttpRequest();
  }
catch (e)
  {
  // Internet Explorer
  try
    {
    xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
    }
  catch (e)
    {
    xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
    }
  }
return xmlHttp;
}