var queryParams=new Array();

	function setUp() {
		var query = self.location.href.split("?")
		var params = (query[1]) ? query[1].split("&") : ""
		var currParam
	
		for (i=0; i< params.length; i++) {
			currParam = params[i].split("=")
			queryParams[i] = new Array()
			queryParams[i][0] = unescape(currParam[0])
			queryParams[i][1] = (currParam[1]) ? unescape(currParam[1]) : ""
	    }
	}
	
	setUp()
	
	function QueryString(query) {
		for (j=0; j<queryParams.length; j++)
			if (queryParams[j][0] == query)
				return queryParams[j][1]
		return null
	}