// Hightlighter Form Function
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)
}

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;
      }
}

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(' ');
   }
}

var Highlighter = window.Highlighter || {};

Highlighter.settings = {
  'row_class'   : 'highlight_row',
  'field_class' : 'highlight_field',
  'focus_class' : 'focus'
}

Highlighter.init = function() {
  var fields = getElementsByClassName(document, '*', Highlighter.settings.field_class);
	for(i = 0; i < fields.length; i++) {
		if(fields[i].type == 'radio' || fields[i].type == 'checkbox' || fields[i].type == 'file') {
			fields[i].onclick = function() {
			  Highlighter.unhighlight();
			  addClassName(this.parentNode.parentNode, "highlighter", true);
			};
			fields[i].onfocus = function() {
			  Highlighter.unhighlight();
			  addClassName(this.parentNode.parentNode, "highlighter", true);
		  };
		} else {
			fields[i].onfocus = function() {
			  Highlighter.unhighlight();
			  addClassName(this.parentNode.parentNode, "highlighter", true);
		  };
			fields[i].onblur = function() {
			  removeClassName(this.parentNode.parentNode, "highlighter");
      };
		}
	} 
};

Highlighter.unhighlight = function() {
  var fields = getElementsByClassName(document, '*', Highlighter.settings.field_class);
	for(i = 0; i < fields.length; i++) {
	  removeClassName(fields[i].parentNode.parentNode, "highlighter");
	} 
};

//Tooltip Form Function
function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      oldonload();
      func();
    }
  }
}

function prepareInputsFortooltips() {
	var inputs = document.getElementsByTagName("input");
	for (var i=0; i<inputs.length; i++){
		// test to see if the tooltip span exists first
		if (inputs[i].parentNode.getElementsByTagName("span")[0]) {
			// the span exists!  on focus, show the tooltip
			inputs[i].onfocus = function () {
				this.parentNode.getElementsByTagName("span")[0].style.display = "inline";
			}
			// when the cursor moves away from the field, hide the tooltip
			inputs[i].onblur = function () {
				this.parentNode.getElementsByTagName("span")[0].style.display = "none";
			}
		}
	}
	// repeat the same tests as above for selects
	var selects = document.getElementsByTagName("select");
	for (var k=0; k<selects.length; k++){
		if (selects[k].parentNode.getElementsByTagName("span")[0]) {
			selects[k].onfocus = function () {
				this.parentNode.getElementsByTagName("span")[0].style.display = "inline";
			}
			selects[k].onblur = function () {
				this.parentNode.getElementsByTagName("span")[0].style.display = "none";
			}
		}
	}
}
addLoadEvent(prepareInputsFortooltips);