Auto-parse any search string from a URL

				
'**************************************
' Name: Auto-parse any search string from a URL
' Description:This JavaScript will parse any search string (the bit in the URL to the right of "?") and automatically declare all search parameters as JavaScript variables with values. It handles both numeric and string variable types correctly.
' By: Martin Budden
'
' Inputs:Any URL with a search string
'
' Returns:declares JavaScript variables with values
'
' Assumes:Nothing: just paste it in, it will work!
'
'This code is copyrighted and has' limited warranties.Please see http://www.Planet-Source-Code.com/vb/scripts/ShowCode.asp?txtCodeId=3791&lngWId=14'for details.'**************************************

// This JavaScript will parse
// any search string
// and automatically declare
// all search parameters 
// as JavaScript variables
// with values.
// Feel free to use/abuse
// it any way you like.
// 
// Get the search string
// (without the leading "?"):
if (location.search.length > 0) {
launchString = location.search.substring(1, location.search.length);
// Split the string at each "&"
// and put the parts
// (name-value pairs) into an array:
var launchStringArray = launchString.split("&");
// Loop through each part in turn:
for (var i = 0; i <= launchStringArray.length - 1; i++) {
 // Get the left and right side
 // of each part (name-value pair):
 var left = launchStringArray[i].substring(0, launchStringArray[i].indexOf("="));
 var right = launchStringArray[i].substring(launchStringArray[i].indexOf("=") + 1, launchString.length);
 // If the right hand side
 // (value) is not numeric, give
 // it quotes to make it a string:
 if (isNaN(right)) {
 right = '"' + right + '"';
 }
 // Use the JavaScript eval()
 // function to declare
 // each part (name-value pair)
 // as a JavaScript variable
 // with a value assigned:
 eval("var " + left + " = " + right);
}
}