function validateNewsletter(){		

		//Aqui podriamos hacer acciones como mostrar la tipica imagen de cargando de Ajax
		var newsletter	= getObject("emailNewsletter");
		var theMessage 	= "Please complete the following: \n-----------------------------------\n";
		var noErrors 		= theMessage
		
		// validate an e-mail address
		if (!/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,4})+$/.test(newsletter.value)){
				theMessage = theMessage + "\n --> Enter a valid e-mail";
		}
		
		// If no errors, submit the form
		if (theMessage == noErrors) {
				
				return true;
				
		
		} else {
		
		// If errors were found, show alert message
				alert(theMessage);
				return false;
		}
		
};

function getObject(elmID) {
    if(document.getElementById) {elmID = document.getElementById(elmID);}
    else if(document.all) {elmID = document.all[elmID];}
    else if(document.layers) {elmID = this._getLayer(elmID);}
    else if(document.forms) {
        if(document.forms[elmID]) {elmID = document.forms[elmID];}
        else {
            for(var i=0; i<document.forms.length; i++) {
                if(document.forms[i][elmID]) {
                    elmID = document.forms[i][elmID];
                    break;
                }
            }
        }
    }
    else {elmID = null;}

    return elmID;
}