var xmlHttp

function getGenreTop12(str)  { 
  xmlHttp=GetXmlHttpObject()
  if (xmlHttp==null)  {
    alert ("Browser does not support HTTP Request")
    return
  }
  var url="ajax/getGenreTop12.php"
  url=url+"?genreId="+str
  url=url+"&sid="+Math.random()
  xmlHttp.onreadystatechange=stateChanged 
  xmlHttp.open("GET",url,true)
  xmlHttp.send(null)
}

function stateChanged() { 
  if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")  { 
    document.getElementById("mainclipsin").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;
}