// NADA
function nada()
{}
//*************************************************************************************
//*************************************************************************************
// fUNCION CERRAR
function cerrar()
{
	window.close();
}

function isEmpty(s)
{   return ((s == null) || (s.length == 0))
}
function obj_ckecked(Obj) {
	var numero=-1
	for (var i=0; i < Obj.length; i++) {
		if (Obj[i].checked)
			numero = i
	}
	if(numero>=0)
		return true;
	else
		return false;
}
//*************************************************************************************
//*************************************************************************************
// VERIFICA UN EMAIL
	function caracteres_validos(str){
		aux=str;
		while (aux!=""){
			car=aux.charAt(0);
			if (
			((car.charCodeAt(0)>=65) && (car.charCodeAt(0)<=90))
			|| ((car.charCodeAt(0)>=97) && (car.charCodeAt(0)<=122))
			|| ((car.charCodeAt(0)>=48) && (car.charCodeAt(0)<=57))
			|| (car.charCodeAt(0)==45)
			|| (car.charCodeAt(0)==46)
			|| (car.charCodeAt(0)==64)
			|| (car.charCodeAt(0)==95))
			{
				aux= aux.substr(1);
			}
			else {
				return false;
			}

		}
		return true;
	}
	function Check_Mail(msg1,msg,obj){
	s=obj.value;
	if ((obj.value.length<6)
		|| (s.lastIndexOf("@")==-1)
		|| (s.indexOf("@")== 0)
		|| (s.indexOf(".")== 0)
		|| (s.indexOf("@.")> 0)
		|| (s.indexOf(".@")> 0)
		|| (s.indexOf("..")> 0)
		|| (s.indexOf("@")!= s.lastIndexOf("@"))
		|| (!caracteres_validos(s))
		|| (s.lastIndexOf(".")==-1)
		|| (s.substr(s.lastIndexOf("@")).length<4)
		|| (s.substr(s.lastIndexOf(".")).length<3)
		|| (s.substr(s.lastIndexOf(".")).length-1>4) ) {
		alert(msg1+' '+msg);
		obj.focus();
		obj.select();
		return false;
	}
	i=obj.value.indexOf(" ")
	while (i>0){
		st1=obj.value.substr(0,i);
		st2=obj.value.substr(i+1);
		obj.value= st1+st2;
		i=obj.value.indexOf(" ")
	}
	return true;
	}