/**
 * Form behaviours
 */
var AutoPopulate = {
  sInputClass:'populate', // Class name for input elements to autopopulate
  sHiddenClass:'structural', // Class name that gets assigned to hidden label elements
  bHideLabels:true, // If true, labels are hidden
  /**
   * Main function
   */
  init:function() {
    
    // Check for DOM support
    if (!document.getElementById || !document.createTextNode) {return;}
    // Find all input elements with the given className
    var arrInputs = YAHOO.util.Dom.getElementsByClassName(AutoPopulate.sInputClass);
    var iInputs = arrInputs.length;
    var oInput;
    for (var i=0; i<iInputs; i++) {
      oInput = arrInputs[i];
      // Make sure it's a text input
      //if (oInput.type != 'text') {continue;}
      // Hide the input's label
      if (AutoPopulate.bHideLabels) { AutoPopulate.hideLabel(oInput.id); }
      // If value is empty and title is not, assign title to value
      
      
      if((oInput.nodeName == 'INPUT') && (oInput.type == 'text') && (oInput.value == '') && (oInput.title != ''))
			{ 
				oInput.value = oInput.title;
				YAHOO.util.Dom.addClass(oInput, 'empty');
			} 
			else if((oInput.nodeName == 'TEXTAREA') && (oInput.innerHTML == '') && (oInput.title != ''))
			{
			  oInput.innerHTML = oInput.title;
			  oInput.addClassName('empty');
			}


      // Add event handlers for focus and blur
      YAHOO.util.Event.addListener(oInput, 'focus', function() {
        // If value and title are equal on focus, clear value
        if (this.value == this.title)
        {
          this.value = '';
          this.select(); // Make input caret visible in IE
          YAHOO.util.Dom.removeClass(oInput, 'empty');
        }
        else
        {
          YAHOO.util.Dom.removeClass(oInput, 'empty');
        }
      });
      YAHOO.util.Event.addListener(oInput, 'blur', function() {
        // If the field is empty on blur, assign title to value
        if (!this.value.length)
        {
          this.value = this.title;
          YAHOO.util.Dom.addClass(oInput, 'empty');
        }
        else
        {
          YAHOO.util.Dom.removeClass(oInput, 'empty');
        }
      });
    }
  },
  hideLabel:function(sId) {
    var arrLabels = document.getElementsByTagName('label');
    var iLabels = arrLabels.length;
    var oLabel;
    for (var i=0; i<iLabels; i++) {
      oLabel = arrLabels[i];
      if (oLabel.htmlFor == sId) {
        oLabel.className = oLabel.className + ' ' + AutoPopulate.sHiddenClass;
      }
    }
  }
};
 
YAHOO.util.Event.onDOMReady(
  function (ev) {
    AutoPopulate.init();
    
  }
);