function PermiteNumeros(evt) {
    var evento = evt ? evt : window.event;
    var charCode = evento.which ? evento.which : evento.keyCode;
    if ((charCode > 31 && (charCode < 48 || charCode > 57)) && (charCode != 46 && charCode != 44))
        return false;
    return true;
}

function validarEspaco(e) {
    var k = "";
    
    if (e.which) {
        k = e.which;
    }
    else if (e.keyCode) {
        k = e.keyCode;
    }
    
    if (k == 32) {
        return false;
    }
    else {
        return true;
    }
}

function validarHost(e)
{
	var acentos = new String('àâêôûãõáéíóúçüÀÂÊÔÛÃÕÁÉÍÓÚÇÜ');
	var k= "";
	
	if (e.which)
	{
		k = e.which;
	}
	else if (e.keyCode)	{
		k = e.keyCode;
	}
	
	if (k == 32){
        return false;
    }

    var rxp = new RegExp(String.fromCharCode(k));
	
	var pos = acentos.search(rxp);

	if (pos > -1)
	{
		return false;
	}
	else
	{
		return true;
	}
}