//##########################################################
//#
//#	Date: 		3 Feb 2006
//#	Author:		David Braiden
//#	Comments:	This code can accept a url and a
//#				comma seperated list of url parameters
//#				It will append all of the specified parameter
//#				from the current page onto the specified url
//#				and redirect to that url.In doing so it will
//#				maintain all of the session variables.
//#
//#	Flash Usage:
//#	on (release) {
//#        getURL ("javascript:FlashRedirect('**URL GOES IN HERE**','BV_SessionID,BV_EngineID,chanId,site')");
//#	}
//#
//##########################################################

function PageQuery(q) {

	q = q.replace(/\%26/g, "&")

	if(q.length > 1) this.q = q.substring(1, q.length);
	else this.q = null;
	this.keyValuePairs = new Array();
	if(q) {
		for(var i=0; i < this.q.split("&").length; i++) {
			this.keyValuePairs[i] = this.q.split("&")[i];
		}
	}
	this.getKeyValuePairs = function() { return this.keyValuePairs; }
	this.getValue = function(s) {
		for(var j=0; j < this.keyValuePairs.length; j++) {
			if(this.keyValuePairs[j].split("=")[0] == s){
				return this.keyValuePairs[j].split("=")[1];
			}
		}
		return false;
	}
	this.getParameters = function() {
		var a = new Array(this.getLength());
			for(var j=0; j < this.keyValuePairs.length; j++) {
				a[j] = this.keyValuePairs[j].split("=")[0];
			}
		return a;
	}
	this.getLength = function() { return this.keyValuePairs.length; }
}

function queryString(key){
	var page = new PageQuery(window.location.search);
	return unescape(page.getValue(key));
}

function getItem(key){
	return(queryString(key));
}

function Build_Url(url,Fields){
	var url_string_param = "";
	var myFields = Fields.split(",");

	for (i=0;i<myFields.length;i++)
	{
		var fieldname = myFields[i];
				var fieldvalue = getItem(myFields[i]);
				if(fieldname == "BV_SessionID"){
					
					if(fieldvalue == "false" || fieldvalue == null){
						fieldvalue = document.searchForm.BV_SessionID.value;	
					}
				}
				if(fieldname == "BV_EngineID"){
					if(fieldvalue == "false" || fieldvalue == null){
						fieldvalue = document.searchForm.BV_EngineID.value;
					}
				}
		url_string_param += "&"+myFields[i]+"=" + fieldvalue;
	
	}

	var new_url = url + url_string_param;
	return(new_url);
}

function FlashRedirect(URL,Fields) {
	var New_URL = Build_Url(URL,Fields);
	window.location =New_URL;
}