addEvent(window, 'load', initForm);



var highlight_array = new Array();



function initForm(){

	browserDetect();

	initializeFocus();

	ifInstructs();

	showRangeCounters();

	initAutoResize();

	checkPaypal();

	checkMechanicalTurk();

}



// for radio and checkboxes, they have to be cleared manually, so they are added to the

// global array highlight_array so we dont have to loop through the dom every time.

function initializeFocus(){

	fields = getElementsByClassName(document, "*", "field");

	for(i = 0; i < fields.length; i++) {

		if(fields[i].type == 'radio' || fields[i].type == 'checkbox' || fields[i].type == 'file') {

			fields[i].onclick = function(){clearSafariRadios(); addClassName(this.parentNode.parentNode, "focused", true)};

			fields[i].onfocus = function(){clearSafariRadios(); addClassName(this.parentNode.parentNode, "focused", true)};

			highlight_array.splice(highlight_array.length,0,fields[i]);

		}

		if(fields[i].className.match('addr')){

			fields[i].onfocus = function(){clearSafariRadios();addClassName(this.parentNode.parentNode.parentNode, "focused", true)};

			fields[i].onblur = function(){removeClassName(this.parentNode.parentNode.parentNode, "focused")};

		}

		else {

			fields[i].onfocus = function(){clearSafariRadios();addClassName(this.parentNode.parentNode, "focused", true)};

			fields[i].onblur = function(){removeClassName(this.parentNode.parentNode, "focused")};

		}

	}

}



function initAutoResize() {

	//var par = window.location.href.toString();

	//parent.location = par+'#height='+document.body.offsetHeight;

}



function clearSafariRadios() {

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

		if(highlight_array[i].parentNode) {

			removeClassName(highlight_array[i].parentNode.parentNode, 'focused');

		}

	}

}



function ifInstructs(){

	var container = document.getElementById('public');

	if(container){

		removeClassName(container,'noI');

		var instructs = getElementsByClassName(document,"*","instruct");

		if(instructs == ''){

			addClassName(container,'noI',true);

		}

		if(container.offsetWidth <= 450){

			addClassName(container,'altInstruct',true);

		}

	}

}



function browserDetect(){

	var detect = navigator.userAgent.toLowerCase();

	var container = document.getElementsByTagName('html');

	if(detect.indexOf('safari') + 1){

		addClassName(container[0], 'safari', true);

	}

	if(detect.indexOf('firefox') + 1){

		addClassName(container[0], 'firefox', true);

	}

}



function checkPaypal() {

	if(document.getElementById('merchant')) {

		document.getElementById('merchantMessage').innerHTML = 'Your order is being processed. Please wait while the page redirects to the merchant checkout.';

		document.getElementById('merchantButton').style.display = 'none';

		document.getElementById('merchant').submit();

	}

}



function checkMechanicalTurk() {

	if(document.getElementById('mechanicalTurk')) {

		document.getElementById('merchantMessage').innerHTML = 'Your submission is being processed. You will be redirected shortly.';

		document.getElementById('merchantButton').style.display = 'none';

		document.getElementById('mechanicalTurk').submit();

	}

}



function showRangeCounters(){

	counters = getElementsByClassName(document, "em", "currently");

	for(i = 0; i < counters.length; i++) {

		counters[i].style.display = 'inline';

	}

}



function validateRange(ColumnId, RangeType) {

	if(document.getElementById('rangeUsedMsg'+ColumnId)) {

		var field = document.getElementById('Field'+ColumnId);

		var msg = document.getElementById('rangeUsedMsg'+ColumnId);



		switch(RangeType) {

			case 'character':

				msg.innerHTML = field.value.length;

				break;

				

			case 'word':

				var words = field.value.split(" ");

				var used = 0;

				for(i =0; i < words.length; i++) {

					if(words[i].replace(/\s+$/,"") != "") used++;

				}

				msg.innerHTML = used;

				break;

				

			case 'digit':

				msg.innerHTML = field.value.length;

				break;

		}

	}

}



/*--------------------------------------------------------------------------*/



//http://www.robertnyman.com/2005/11/07/the-ultimate-getelementsbyclassname/

function getElementsByClassName(oElm, strTagName, strClassName){

	var arrElements = (strTagName == "*" && oElm.all)? oElm.all : oElm.getElementsByTagName(strTagName);

	var arrReturnElements = new Array();

	strClassName = strClassName.replace(/\-/g, "\\-");

	var oRegExp = new RegExp("(^|\\s)" + strClassName + "(\\s|$)");

	var oElement;

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

		oElement = arrElements[i];		

		if(oRegExp.test(oElement.className)){

			arrReturnElements.push(oElement);

		}	

	}

	return (arrReturnElements)

}



//http://www.bigbold.com/snippets/posts/show/2630

function addClassName(objElement, strClass, blnMayAlreadyExist){

   if ( objElement.className ){

      var arrList = objElement.className.split(' ');

      if ( blnMayAlreadyExist ){

         var strClassUpper = strClass.toUpperCase();

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

            if ( arrList[i].toUpperCase() == strClassUpper ){

               arrList.splice(i, 1);

               i--;

             }

           }

      }

      arrList[arrList.length] = strClass;

      objElement.className = arrList.join(' ');

   }

   else{  

      objElement.className = strClass;

      }

}



//http://www.bigbold.com/snippets/posts/show/2630

function removeClassName(objElement, strClass){

   if ( objElement.className ){

      var arrList = objElement.className.split(' ');

      var strClassUpper = strClass.toUpperCase();

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

         if ( arrList[i].toUpperCase() == strClassUpper ){

            arrList.splice(i, 1);

            i--;

         }

      }

      objElement.className = arrList.join(' ');

   }

}



//http://ejohn.org/projects/flexible-javascript-events/

function addEvent( obj, type, fn ) {

  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] );

  } 

  else{

    obj.addEventListener( type, fn, false );	

  }

}