function CreateXmlHttpObject(handler)
{ 
var objXmlHttpReq=null

if (navigator.userAgent.indexOf("Opera")>=0)
{
alert("This example doesn't work in Opera") 
return 
}
if (navigator.userAgent.indexOf("MSIE")>=0)
{ 
var strName="Msxml2.XMLHTTP"
if (navigator.appVersion.indexOf("MSIE 5.5")>=0)
{
strName="Microsoft.XMLHTTP"
} 
try
{ 
objXmlHttpReq=new ActiveXObject(strName)
objXmlHttpReq.onreadystatechange=handler 
return objXmlHttpReq
} 
catch(e)
{ 
alert("Error. Scripting for ActiveX might be disabled") 
return 
} 
} 
if (navigator.userAgent.indexOf("Mozilla")>=0)
{
objXmlHttpReq=new XMLHttpRequest()
objXmlHttpReq.onload=handler
objXmlHttpReq.onerror=handler 
return objXmlHttpReq
}
} 


function showCategoryRecord(ItemNum)
{ 
	if (ItemNum.length==0)
	{ 
		document.getElementById("ProductSizes").innerHTML=""
		return
	}
	

var WebURL="Sizes.asp?ItemNum=" + ItemNum

xmlHttpReq=CreateXmlHttpObject(changeOfState)
xmlHttpReq.open("GET", WebURL, true)
xmlHttpReq.send(null)
} 

function showCategorySizes(ItemNum)
{ 
if (ItemNum.length==0)
{ 
document.getElementById("ProductSizes").innerHTML=""
return
}
var WebURL="Sizes.asp?ItemNum=" + ItemNum
xmlHttpReq=CreateXmlHttpObject(changeOfState)
xmlHttpReq.open("GET", WebURL, true)
xmlHttpReq.send(null)
} 

function changeOfState() 
{ 
if (xmlHttpReq.readyState==4)
{ 
document.getElementById("ProductSizes").innerHTML=xmlHttpReq.responseText 
} 
}