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var xmlHttp;
var flag = false;
function createXMLHttpRequest()
{
if(window.ActiveXObject)
{
xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
}
else if(window.XMLHttpRequest)
{
xmlHttp=new XMLHttpRequest();
}
}
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/*
* history
*
* Created on 2003-5-26
*
* 2003-06-05
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*
* 2003-09-02 by David Yu
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