function Abre_Chat(endereco)  
{
   popup = window.open(endereco,"Detalhes","toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=yes,WIDTH=680,HEIGHT=390,Left=50, Top=50"); 
}


function verificaemail(email) 
{       
	var achou_ponto=false;
    var achou_arroba=false;
    var achou_caracter=false;
    for (var i=0; i<email.length; i++) 
	{
		if (email.charAt(i)=="@") achou_arroba=true;
        else if (email.charAt(i)==".") achou_ponto=true;
        else if (email.charAt(i)!=" ") achou_caracter=true;
    }
    return (achou_ponto & achou_arroba & achou_caracter);
}




//================================================================================ 
//Verifica grupo de radiobutton
//
function VerificaCheckInativo(groupname, message) {
	var inputs = document.getElementsByTagName("input");
	var hasItems = false;
	for (var i = 0; i < inputs.length; i++) {
		if (inputs[i].type == 'checkbox') {
        	var name = inputs[i].name;
			var isFromGroup = (name.lastIndexOf(groupname) + groupname.length ) == name.length;
			if (isFromGroup) {
				hasItems = true;
				if (inputs[i].checked) {
					return true;
				}
			}
		}
	}
	if (hasItems) { 
		if (!message) message = 'Aviso: '+ message;
		alert(message);
		return false;
	} else {
		return true;
	}
}