function EvaluaReg(Form,Check){
	var CheckMail = new Array("Mail");
	var CheckPsw = new Array("Password","RePasswd");
		
	for(i=0; i<Form.elements.length; i++){	
		for(j=0; j< Check.length; j++)
			if(Form.elements[i].name==Check[j]) 
				if (Form.elements[i].value==""){
					window.alert("Please fill out all fields!");
					Form.elements[i].focus();
					return false;
				}
	
		for(j=0; j< CheckMail.length; j++)
			if(Form.elements[i].name==CheckMail[j]) 
				if (Form.elements[i].value.indexOf ('@',0) == -1 || Form.elements[i].value.indexOf ('.',0) == -1) {
					window.alert("Please enter a valid email adress.");
				 	Form.elements[i].focus();
					return false;
				}
				
      	if  (Form.elements[i].id=="psw")
      		if ((Form.Password.value == "") || (Form.Password.value != Form.RePasswd.value)){
				window.alert("Por favor verifique el password");
				Form.Password.value = ''; Form.RePasswd.value = '';
				Form.Password.focus();
				return false;
			}
				
	}
	return true;
}