var mifecha;
        function pintaFecha() 
        {
            var fecha = new Date();
            var dia_letra = fecha.getDay();
            var dia = fecha.getDate();
            var mes = fecha.getMonth();
            var anyo = fecha.getFullYear();
 
            switch(dia_letra) 
            {
                case 0: 
                    dia_letra = "Domingo"; 
                    break;
                case 1: 
                    dia_letra = "Lunes"; 
                    break;
                case 2: 
                    dia_letra = "Martes"; 
                    break;
                case 3: 
                    dia_letra = "Miércoles"; 
                    break;
                case 4: 
                    dia_letra = "Jueves"; 
                    break;
                case 5: 
                    dia_letra = "Viernes"; 
                    break;
                case 6: 
                    dia_letra = "Sábado"; 
                    break;
                default: 
                    dia_letra = "Domingo"; 
                    break;
            }
            switch(mes) 
            {
                case 0: 
                    mes = "Enero"; 
                    break;
                case 1: 
                    mes = "Febrero"; 
                    break;
                case 2: 
                    mes = "Marzo"; 
                    break;
                case 3: 
                    mes = "Abril"; 
                    break;
                case 4: 
                    mes = "Mayo"; 
                    break;
                case 5: 
                    mes = "Junio"; 
                    break;
                case 6: 
                    mes = "Julio";
                    break;
                case 7: 
                    mes = "Agosto"; 
                    break;
                case 8: 
                    mes = "Septiembre"; 
                    break;
                case 9: 
                    mes = "Octubre"; 
                    break;
                case 10: 
                    mes = "Noviembre"; 
                    break;
                case 11: 
                    mes = "Diciembre";
                    break;
                default: 
                    mes = ""; 
                    break;
            }
            mifecha=dia_letra+", "+dia+" de "+mes+" de "+anyo;
 	    return (mifecha);
           
        }
		<!--
function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}
//-->
function check_form()
{
	var required_fields= $$(".required");

	
	if (checkrequired(required_fields))
	{		
		
		// validar email
		if (!checkemail($("email").value))
		{
			alert("El campo 'Email' no tiene un formato correcto");
			$("email").select();
			return false;
		}	
		
		return true;
	}

	return false;
}