/*
	InputFocus for jQuery (version 0.9)
	Copyright (c) 2009 Simone D'Amico
	http://www.simonedamico.it/2009/08/jquery-inputfocus-evidenziare-i-campi-input-e-textarea-di-una-form/
	
	Licensed under the MIT license:
		http://www.opensource.org/licenses/mit-license.php

	Any and all use of this script must be accompanied by this copyright/license notice in its present form.
*/
$.fn.inputfocus=function(params){
	params=$.extend({
		focus_class:"focus", 
		value:""
	}, 
	params);
	this.each(function(){
		$(this).focus(function(){
			$(this).addClass(params.focus_class);
			this.value=(this.value==params.value)?'':this.value;
		});
		$(this).blur(function(){
			$(this).removeClass(params.focus_class);
			this.value=(this.value=='')?params.value:this.value;
		});
	});
	return this;
};