//==============================================================
function valida_numero(field)
{
// Valida Números - por Emmanuel - EmartsNet - CódigoFonte.net
 var digits="0123456789"
 var temp 
 var ok = true;
for (var i=0;i< field.value.length;i++)
 {
  temp=field.value.substring(i,i+1)

  if (digits.indexOf(temp)==-1)
   {
      ok = false;
      break;
   }

  }
return ok;
};
//#######################################################
function enviaform()
{
    var theform;
		if (window.navigator.appName.toLowerCase().indexOf("microsoft") > -1)
		 {
			  theform = document.sala;
		 }
		else
		 {
			  theform = document.forms["sala"];
		 };
	 var rg_ok = valida_numero(theform.rg);
	 if(!rg_ok)
	 {
	   alert('Digite somente números em seu RG');
		 theform.rg.focus();
	 }
	 else
	 {
	   theform.submit();
	 };

};