function ValidateForm(myForm)
{
	var cMessage
	var lOk
	var LineBreak
	cMessage = "";
	lOk = true;
	LineBreak = "\r\n";
	if ( myForm.textfield1.value == "" )
		{
		lOk = false;
		cMessage += "Nome em branco"+LineBreak;
		}
	if ( myForm.textfield2.value == "" )
		{
		lOk = false;
		cMessage += "Email em branco"+LineBreak;
		}		
	else
		{
		if ( !checkemail(myForm.textfield2.value) )
			{
			lOk = false;
			cMessage += "Email inválido"+LineBreak;	
			}
		}
	if ( lOk == false)
		{
		alert(cMessage);
		return lOk;
		}
	else
		myForm.submit();
}