/*

 * QTObject embed

 * http://blog.deconcept.com/2005/01/26/web-standards-compliant-javascript-quicktime-detect-and-embed/

 *

 * by Geoff Stearns (geoff@deconcept.com, http://www.deconcept.com/)

 *

 * v1.0.2 - 02-16-2005

 *

 * Embeds a quicktime movie to the page, includes plugin detection

 *

 * Usage:

 *

 *	myQTObject = new QTObject("path/to/mov.mov", "movid", "width", "height");

 *	myQTObject.altTxt = "Upgrade your Quicktime Player!";    // optional
 

 *  myQTObject.addParam("controller", "false");              // optional

 *	myQTObject.write();

 *

 */



QTObject = function(mov, id, w, h) {

	this.mov = mov;

	this.id = id;

	this.width = w;

	this.height = h;

	this.redirect = "";

	this.sq = document.location.search.split("?")[1] || "";

	this.altTxt = "This content requires the QuickTime Plugin. <a href='http://www.apple.com/quicktime/download/'>Download QuickTime Player</a>.";

	this.bypassTxt = "<p>Already have QuickTime Player? <a href='?detectqt=false&"+ this.sq +"'>Click here.</a></p>";

	this.params = new Object();

	this.doDetect = getQueryParamValue('detectqt');

}



QTObject.prototype.addParam = function(name, value) {

	this.params[name] = value;

}



QTObject.prototype.getParams = function() {

    return this.params;

}



QTObject.prototype.getParam = function(name) {

    return this.params[name];

}



QTObject.prototype.getParamTags = function() {

    var paramTags = "";

    for (var param in this.getParams()) {

        paramTags += '<param name="' + param + '" value="' + this.getParam(param) + '" />';

    }

    if (paramTags == "") {

        paramTags = null;

    }

    return paramTags;

}



QTObject.prototype.getHTML = function() {

    var qtHTML = "";

	if (navigator.plugins && navigator.plugins.length) { // not ie

        qtHTML += '<embed type="video/quicktime" src="' + this.mov + '" width="' + this.width + '" height="' + this.height + '" id="' + this.id + '"';

        for (var param in this.getParams()) {

            qtHTML += ' ' + param + '="' + this.getParam(param) + '"';

        }

        qtHTML += '></embed>';

    }

    else { // pc ie

        qtHTML += '<object classid="clsid:02BF25D5-8C17-4B23-BC80-D3488ABDDC6B" width="' + this.width + '" height="' + this.height + '" id="' + this.id + '">';

        this.addParam("src", this.mov);

        if (this.getParamTags() != null) {

            qtHTML += this.getParamTags();

        }

        qtHTML += '</object>';

    }

    return qtHTML;

}





QTObject.prototype.getVariablePairs = function() {

    var variablePairs = new Array();

    for (var name in this.getVariables()) {

        variablePairs.push(name + "=" + escape(this.getVariable(name)));

    }

    if (variablePairs.length > 0) {

        return variablePairs.join("&");

    }

    else {

        return null;

    }

}



QTObject.prototype.write = function(elementId) {

	if(isQTInstalled() || 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 (elementId) {

				document.getElementById(elementId).innerHTML = this.altTxt +""+ this.bypassTxt;

			} else {

				document.write(this.altTxt +""+ this.bypassTxt);

			}

		}

	}		

}



function isQTInstalled() {

	var qtInstalled = false;

	qtObj = false;

	if (navigator.plugins && navigator.plugins.length) {

		for (var i=0; i < navigator.plugins.length; i++ ) {

         var plugin = navigator.plugins[i];

         if (plugin.name.indexOf("QuickTime") > -1) {

			qtInstalled = true;

         }

      }

	} else {

		execScript('on error resume next: qtObj = IsObject(CreateObject("QuickTimeCheckObject.QuickTimeCheck.1"))','VBScript');

		qtInstalled = qtObj;

	}

	return qtInstalled;

}



/* get value of querystring param */

function getQueryParamValue(param) {

	var q = document.location.search;

	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 "";

	}

}