/**
 * jQuery focusMagic plugin
 * @name jquery.focusMagic.js
 * @author Aaron Vanderzwan - http://www.aaronvanderzwan.com/
 * @version 0.1
 * @date January 28, 2009
 * @category jQuery plugin
 * @copyright (c) 2009 Aaron Vanderzwan (aaronvanderzwan.com)
 * @example Visit http://www.aaronvanderzwan.com/focusmagic/ for more informations about this jQuery plugin
 */

(function($) {
  $.fn.focusMagic = function(options) {
    originalFieldContent = [];
    
    var form = $(this);
    // Sets up what the original field content is for later reference
  	form.find('input,textarea').each(function(i){
      var firstContent = $(this).val();
      originalFieldContent.push(firstContent);
    });
    
    // The action for focus/blur
    form.find('input,textarea').not(':submit').focus(function(){
      var $this = $(this);
      var content = $this.val();
      if(originalFieldContent.in_array(content, false)){
        $this.val('');
        $this.blur(function(){
          if( $this.val() == '' ){
            $this.val(originalFieldContent[originalFieldContent.in_array(content, true)]);
          }
        });
      }
    });
    
    
    
    
    
    
    // A function for checking if an item is in an array, can return an int, or boolean
    Array.prototype.in_array = function($item, return_int){
      for(var i = 0, l = this.length; i < l; i++) {
    		if(this[i] == $item) {
    		  if(return_int){
    		    return i;
    		  }else{
    		    return true;
    		  }
    		}
    	}
    	return false;
  	}
    
    // Private function for debugging
    function debug($obj) {
      if (window.console && window.console.log) {
        window.console.log($obj);
      }
    }
  };
})(jQuery);