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<script type="text/javascript">

<!--

function Request(strName){

var strHref = "www.lougoo.com//index.htm?a=aaa&b=bbb&c=ccc";

var intPos = strHref.indexOf("?");

var strRight = strHref.substr(intPos + );

var arrTmp = strRight.split("&");

for(var i = 0; i < arrTmp.length; i  ) {

var arrTemp = arrTmp[i].split("=");

if(arrTemp[0].toUpperCase() == strName.toUpperCase()) return arrTemp[];

}

return "";

}

alert(Request("a"));

alert(Request("b"));

alert(Request("c"));

//-->

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 <script type="text/javascript">

<!--

String.prototype.getQuery = function(name) {

var reg = new RegExp("(^|&)"+ name  "=([^&]*)(&|$)");

var r = this.substr(this.indexOf("\?") ).match(reg);

if (r!=null) return unescape(r[2]); return null;

}

var strHref = "www.lougoo.com/index.htm?a=aaa&b=bbb&c=ccc";

alert(strHref.getQuery("a"));

alert(strHref.getQuery("b"));

alert(strHref.getQuery("c"));

//-->

</script>