(function($){
		$.fn.extend({
        fieldFocus:function(selector,callback){
        
            this.focus(function() {
       			$(this).removeClass("idleField").addClass("focusField");
    		    if (this.value == this.defaultValue){ 
    		    	this.value = '';
				}
				if(this.value != this.defaultValue){
	    			this.select();
	    		}
    	
    	    });
    	    
    	    
    		this.blur(function() {
    			$(this).removeClass("focusField").addClass("idleField");
    		    if ($.trim(this.value) == ''){
			    	this.value = (this.defaultValue ? this.defaultValue : '');
				}
    		 }); 
		  }			
	   });
	   
	})(jQuery);