Parse URL Query String with Javascript

UPDATE!!! - I published a better, more elegant way to parse the query string here.

Here is a small bit of JavaScript to help you sort through a query string on a page. For example, say you want to use the variables sent to "State.aspx?s=Utah&id=5&person=Bob", this code will extract those variables and make them usable further down in the code:

<script type="text/javascript">
var aryV = location.search.replace("?","").split("&");
var i=0
while (i < aryV.length)
{ if (aryV[i].indexOf("s=") >= 0)
{ strState = aryV[i].substr(aryV[i].indexOf("=")+1).replace(/%20/g, " ");
 strState = strState.replace(/\+/g, " ");
}
else if (aryV[i].indexOf("id=") >= 0)
{ strID = aryV[i].substr(aryV[i].indexOf("=")+1).replace(/%20/g, " ");
 strID = strID.replace(/\+/g, " ");
}
else if (aryV[i].indexOf("person=") >= 0)
{ strPerson = aryV[i].substr(aryV[i].indexOf("=")+1).replace(/%20/g, " ");
 strPerson = strPerson.replace(/\+/g, " ");
}
i+=1;
}

document.write("<tt>The State is : " + strState + "<br>");
document.write("The ID is    : " + strID + "<br>");
document.write("The Person is: " + strPerson + "</tt>");
</script>