/*
	 * 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 = "Per vedere il filmato hai bisogno di QuickTime. <a href='http://www.apple.com/quicktime/download/'>Download QuickTime Player</a>.";
		this.bypassTxt = "<p>Hai il plug-in ? <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 "";
		}
	}