/*
 * global.js
 *
 * Last Update: 05-17-2005
 * geoff@choppingblock.com
 *
 */


// adds a function to the page onload, so we don't overwrite existing onload functions
function addOnLoad(f) {
    var currentOnLoad = window.onload;
    if (typeof window.onload != "function") {
        window.onload = f;
    } else {
        window.onload = function() {
            currentOnLoad();
            f();
        }
    }
}

 /*
  * FlashObject embed
  * by Geoff Stearns (geoff@choppingblock.com, http://www.choppingblock.com/)
  *
  * v1.1.1 - 05-17-2005
  *
  * writes the embed code for a flash movie, includes plugin detection
  *
  * Usage:
  *
  *	myFlash = new FlashObject("path/to/swf.swf", "swfid", "width", "height", flashversion, "backgroundcolor");
  *	myFlash.write("objId");
  *
  * for best practices, see:
  *  http://blog.deconcept.com/2005/03/31/proper-flash-embedding-flashobject-best-practices/
  *
  */

 var FlashObject = function(swf, id, w, h, ver, c) {
 	this.swf = swf;
 	this.id = id;
 	this.width = w;
 	this.height = h;
 	this.version = ver;
 	this.align = "middle";

 	this.params = new Object();
 	this.variables = new Object();

 	this.redirect = "";
 	this.sq = document.location.search.split("?")[1] || "";
 	this.bypassTxt = "<p>Already have Macromedia Flash Player? <a href='?detectflash=false&"+ this.sq +"'>Click here if you have Flash Player "+ this.version +" installed</a>.</p>";
 	
 	if (c) this.color = this.addParam('bgcolor', c);
 	this.addParam('quality', 'high'); // default to high
 	this.doDetect = getQueryParamValue('detectflash');
 }

 var FOP = FlashObject.prototype;

 FOP.addParam = function(name, value) { this.params[name] = value; }

 FOP.getParams = function() { return this.params; }

 FOP.getParam = function(name) { return this.params[name]; }

 FOP.addVariable = function(name, value) { this.variables[name] = value; }

 FOP.getVariable = function(name) { return this.variables[name]; }

 FOP.getVariables = function() { return this.variables; }

 FOP.getParamTags = function() {
     var paramTags = "";
     for (var param in this.getParams()) {
         paramTags += '<param name="' + param + '" value="' + this.getParam(param) + '" />';
     }
     return (paramTags == "") ? false:paramTags;
 }

 FOP.getHTML = function() {
     var flashHTML = "";
     if (navigator.plugins && navigator.mimeTypes.length) { // netscape plugin architecture
         flashHTML += '<embed type="application/x-shockwave-flash" src="' + this.swf + '" width="' + this.width + '" height="' + this.height + '" id="' + this.id + '" align="' + this.align + '"';
         for (var param in this.getParams()) {
             flashHTML += ' ' + param + '="' + this.getParam(param) + '"';
         }
         if (this.getVariablePairs()) {
             flashHTML += ' flashVars="' + this.getVariablePairs() + '"';
         }
         flashHTML += '></embed>';
     } else { // PC IE
         flashHTML += '<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" width="' + this.width + '" height="' + this.height + '" name="' + this.id + '" align="' + this.align + '">';
         flashHTML += '<param name="movie" value="' + this.swf + '" />';
         if (this.getParamTags()) {
             flashHTML += this.getParamTags();
         }
         if (this.getVariablePairs() != null) {
             flashHTML += '<param name="flashVars" value="' + this.getVariablePairs() + '" />';
         }
         flashHTML += '</object>';
     }
     return flashHTML;	
 }

 FOP.getVariablePairs = function() {
     var variablePairs = new Array();
     for (var name in this.getVariables()) { 
     	variablePairs.push(name + "=" + this.getVariable(name)); 
     }
     return (variablePairs.length > 0) ? variablePairs.join("&"):false;
 }

 FOP.write = function(elementId) {
 	if(detectFlash(this.version) || this.doDetect=='false') {
 		if (elementId) {
 			document.getElementById(elementId).innerHTML = this.getHTML();
 		} else {
 			document.write(this.getHTML());
 		}
 	} else {
 		if (this.redirect != "") {
 			document.location.replace(this.redirect);
 		} else if (this.altTxt) {
 			if (elementId) {
 				document.getElementById(elementId).innerHTML = this.altTxt +""+ this.bypassTxt;
 			} else {
 				document.write(this.altTxt +""+ this.bypassTxt);
 			}
 		}
 	}		
 }

 /* ---- detection functions ---- */
 function getFlashVersion() {
 	var flashversion = 0;
 	if (navigator.plugins && navigator.mimeTypes.length) {
 		var x = navigator.plugins["Shockwave Flash"];
 		if(x && x.description) {
 			var y = x.description;
    			flashversion = y.charAt(y.indexOf('.')-1);
 		}
 	} else {
 		result = false;
 	    for(var i = 15; i >= 3 && result != true; i--){
    			execScript('on error resume next: result = IsObject(CreateObject("ShockwaveFlash.ShockwaveFlash.'+i+'"))','VBScript');
    			flashversion = i;
    		}
 	}
 	return flashversion;
 }

 function detectFlash(ver) {	return (getFlashVersion() >= ver) ? true:false; }

 // get value of query string param
 function getQueryParamValue(param) {
 	var q = document.location.search || document.location.href.split("#")[1];
 	if (q) {
 		var detectIndex = q.indexOf(param +"=");
 		var endIndex = (q.indexOf("&", detectIndex) > -1) ? q.indexOf("&", detectIndex) : q.length;
 		if (q.length > 1 && detectIndex > -1) {
 			return q.substring(q.indexOf("=", detectIndex)+1, endIndex);
 		} else {
 			return "";
 		}
 	}
 }

 /* add Array.push if needed */
 if(Array.prototype.push == null){
 	Array.prototype.push = function(item) { this[this.length] = item; return this.length; }
 }