var xmlHttp;
var tmpIdx;

function check_qty(sizeIdx,articleTypeIdx) {
xmlHttp=httpXMLobjects();
if (xmlHttp==null) {
  alert ("Browser does not support AJAX");
  return;
}

tmpIdx = articleTypeIdx;
var chkpage="chk_stock.php"+"?articleSizeIdx="+sizeIdx+"&articleTypeIdx="+articleTypeIdx+"&sid="+Math.random();
xmlHttp.onreadystatechange=stateChanged;
xmlHttp.open("GET",chkpage,true);
xmlHttp.send(null);
} 

function stateChanged() { 
if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete") { 
		
		mval = parseInt(xmlHttp.responseText);
		if (mval>5){mval=5;}
		
		document.getElementById("count"+tmpIdx).options.length = 0;
		for (var i=1;i<=mval;i++)
		{	 	
			document.getElementById("count"+tmpIdx).options[parseInt(i)-1] = new Option(i,i);
	 	}
 } 
}

function httpXMLobjects() {
var xmlHttp=null;
try {
 // Fuer Firefox, Opera und Safari
 xmlHttp=new XMLHttpRequest();
 }
catch (e) {
 // Der Internet Explorer wills wieder anders
 try {
  xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
  }
 catch (e) {
  xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
  }
 }
return xmlHttp;
}