// -----------------------------------------------------------------------------------
//	survey v 0.2 - 2009-07-31
//	by Sindre Wimberger - wimberger@echonet.at
//  v 0.2 - Moeglichkeit mehrere Umfragen auf einer Seite einzubauen, umfrage spezifische StartID eingebaut
// -----------------------------------------------------------------------------------
//
// Survey.init(x1);
//
// Configuration
// x1 || CustomerID
// -----------------------------------------------------------------------------------
var Survey = {	
	css: "http://survey.echonet.at/assets/base/js.css",
    overlayBg : "",
    overlayOpacity : "",
    customstartid : "start-tch_centrope",
	iframe: "http://survey.echonet.at/tch_centrope/iframe",
	host: 'http://survey.echonet.at',
	init: function(autostart,fixed) {
        if (autostart) {
            Survey.autostart = true;
        }
        if (fixed) {
            Survey.fixed = true;
        }
		if (Survey.$('surveystart') || Survey.$('surveystart2') || Survey.autostart) { // Wenn Startbutton oder Autostart
//			Survey.browserCheck();
			Survey.CSSload();
			Survey.create();
    }
		if (Survey.$('surveystart')) { // Startbutton
			Survey.starter = Survey.$('surveystart');
			Survey.starter.onclick = function() { Survey.start(); return false; }
		}
		if (Survey.$('surveystart2')) { // Startbutton 2
			Survey.starter = Survey.$('surveystart2');
			Survey.starter.onclick = function() { Survey.start(); return false; }
		}
    if(Survey.customstartid) {
      if (Survey.$(Survey.customstartid)) { // Umfragespezifischer Startbutton
				Survey.CSSload();
				Survey.create();
        Survey.starter = Survey.$(Survey.customstartid);
        Survey.starter.onclick = function() { Survey.start(); return false; }
      }
    }
		if (Survey.autostart) { // Autostart
			 Survey.start();
		}
	},
	CSSload: function() {	
  	if(!Survey.$('echonet-survey-css')) {
			var headTag = document.getElementsByTagName("head")[0];
			// Insert style tag into header
			var tag = document.createElement("link");
			tag.rel = "stylesheet";
			tag.type = "text/css";
			tag.href = Survey.css;
			tag.id = "echonet-survey-css";
			headTag.appendChild(tag);		
    }	
	},
  create: function() {
  	if(!Survey.$('surveyoverlay')) {
      // The rest of this code inserts html at the bottom of the page that looks similar to this:
      //	<div id="Surveyoverlay"></div>
      //	<div id="Survey">
      //	</div>
      var objBody = document.getElementsByTagName("body").item(0);
      
      var objOverlay = document.createElement("div");
      objOverlay.setAttribute('id','surveyoverlay');
      objOverlay.style.display = 'none';
      if(Survey.overlayOpacity != "") {
              objOverlay.style.opacity = Survey.overlayOpacity;
            objOverlay.style.filter = 'alpha(opacity=' + (Survey.overlayOpacity * 100) + ')';
          }
      if(Survey.overlayBg != "") {
        objOverlay.style.backgroundColor = Survey.overlayBg;
          }
      if(!Survey.fixed) {
  //			objOverlay.onclick = function() { Survey.end(); }
          }
      objBody.appendChild(objOverlay);
      
      var objSurvey = document.createElement("div");
      objSurvey.setAttribute('id','survey');
      objSurvey.style.display = 'none';
          
      var objSurveyClose = document.createElement("div");
      objSurveyClose.setAttribute('id','surveyclose');
      objSurveyClose.onclick = function() { Survey.end(); }
      if(!Survey.fixed) {
      objSurvey.appendChild(objSurveyClose);	
          }
      
      var objSurveyIframe = document.createElement("iframe");
      objSurveyIframe.setAttribute('src',Survey.iframe);
  //		objSurveyIframe.setAttribute('id','surveyiframe');
      objSurveyIframe.setAttribute('name','surveyiframe');
      objSurveyIframe.setAttribute('scrolling','no');
      objSurveyIframe.setAttribute('frameBorder','0');
      objSurvey.appendChild(objSurveyIframe);
  
      objBody.appendChild(objSurvey);	
    }
	},
	start: function() {	
		Survey.hideSelectBoxes();
		Survey.hideFlash();
		Survey.hideIframe();
		var arrayPageSize = Survey.getPageSize();
		Survey.setHeight('surveyoverlay', arrayPageSize[1]);
		Survey.appear('surveyoverlay');
		var arrayPageScroll = Survey.getPageScroll();
		var SurveyTop = arrayPageScroll[1] + (arrayPageSize[3] / 15);
		Survey.setTop('survey', SurveyTop);
		Survey.show('survey');
	},
	end: function() {
        if(!Survey.fixed) {
            Survey.hide('survey');
            Survey.fade('surveyoverlay');
            Survey.$('surveyoverlay').innerHTML = '';
            Survey.showSelectBoxes();
            Survey.showFlash();
						Survey.showIframe();
        }
	},
	addEvent:function( obj, type, fn ) {
		if (obj.addEventListener)
			obj.addEventListener( type, fn, false );
		else if (obj.attachEvent)
		{
			obj["e"+type+fn] = fn;
			obj[type+fn] = function() { obj["e"+type+fn]( window.event ); }
			obj.attachEvent( "on"+type, obj[type+fn] );
		}
	},	
	appear:function(element){
		Survey.$(element).style.display = "block";
	},
	fade:function(element){
		Survey.$(element).style.display = "none";
	},
	hide:function(element){
		Survey.$(element).style.display = "none";
	},
	show:function(element){
		Survey.$(element).style.display = "block";
	},
	browserCheck:function(){
        Survey.isIE  = (navigator.appVersion.indexOf("MSIE") != -1) ? true : false;
        Survey.isWin = (navigator.appVersion.toLowerCase().indexOf("win") != -1) ? true : false;
        Survey.isOpera = (navigator.userAgent.indexOf("Opera") != -1) ? true : false;
	},
	$:function(strId){
		return document.getElementById(strId);
	},
	getPageScroll:function(){

	var yScroll;

	if (self.pageYOffset) {
		yScroll = self.pageYOffset;
	} else if (document.documentElement && document.documentElement.scrollTop){	 // Explorer 6 Strict
		yScroll = document.documentElement.scrollTop;
	} else if (document.body) {// all other Explorers
		yScroll = document.body.scrollTop;
	}

	arrayPageScroll = new Array('',yScroll) 
	return arrayPageScroll;
	},
	getPageSize:function(){
		
		var xScroll, yScroll;
		
		if (window.innerHeight && window.scrollMaxY) {	
			xScroll = document.body.scrollWidth;
			yScroll = window.innerHeight + window.scrollMaxY;
		} else if (document.body.scrollHeight > document.body.offsetHeight){ // all but Explorer Mac
			xScroll = document.body.scrollWidth;
			yScroll = document.body.scrollHeight;
		} else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari
			xScroll = document.body.offsetWidth;
			yScroll = document.body.offsetHeight;
		}
		
		var windowWidth, windowHeight;
		if (self.innerHeight) {	// all except Explorer
			windowWidth = self.innerWidth;
			windowHeight = self.innerHeight;
		} else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
			windowWidth = document.documentElement.clientWidth;
			windowHeight = document.documentElement.clientHeight;
		} else if (document.body) { // other Explorers
			windowWidth = document.body.clientWidth;
			windowHeight = document.body.clientHeight;
		}	
		if(yScroll < windowHeight){
			pageHeight = windowHeight;
		} else { 
			pageHeight = yScroll;
		}
		if(xScroll < windowWidth){	
			pageWidth = windowWidth;
		} else {
			pageWidth = xScroll;
		}
		arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight) 
		return arrayPageSize;
	},
	setHeight:function(element,h) {
   		element = Survey.$(element);
    	element.style.height = h +"px";
	},
	setTop:function(element,t) {
	   	element = Survey.$(element);
    	element.style.top = t +"px";
	},
	showFlash:function(){
		var flashObjects = document.getElementsByTagName("object");
		for (i = 0; i < flashObjects.length; i++) {
			flashObjects[i].style.visibility = "visible";
		}
	
		var flashEmbeds = document.getElementsByTagName("embed");
		for (i = 0; i < flashEmbeds.length; i++) {
			flashEmbeds[i].style.visibility = "visible";
		}
	},
	hideFlash:function(){
		var flashObjects = document.getElementsByTagName("object");
		for (i = 0; i < flashObjects.length; i++) {
			flashObjects[i].style.visibility = "hidden";
		}
	
		var flashEmbeds = document.getElementsByTagName("embed");
		for (i = 0; i < flashEmbeds.length; i++) {
			flashEmbeds[i].style.visibility = "hidden";
		}
	},
	showSelectBoxes:function (){
		selects = document.getElementsByTagName("select");
		for (i = 0; i != selects.length; i++) {
			selects[i].style.visibility = "visible";
		}
	},
	hideSelectBoxes:function(){
		selects = document.getElementsByTagName("select");
		for (i = 0; i != selects.length; i++) {
			selects[i].style.visibility = "hidden";
		}
	},
	showIframe:function(){
		var iframeObjects = document.getElementsByTagName("iframe");
		for (i = 0; i < iframeObjects.length; i++) {
    	var iframe = iframeObjects[i];
    	if(iframe.name != "surveyiframe") {
				iframe.style.visibility = "visible";
      }
		}
	},
	hideIframe:function(){
		var iframeObjects = document.getElementsByTagName("iframe");
		for (i = 0; i < iframeObjects.length; i++) {
    	var iframe = iframeObjects[i];
    	if(iframe.name != "surveyiframe") {
				iframe.style.visibility = "hidden";
      }
		}
	}  
};
Survey.addEvent(window, 'load', function(){ Survey.init(''); });