function trim(sString)
{
	while (sString.substring(0,1) == ' ')
	{
		sString = sString.substring(1, sString.length);
	}
	while (sString.substring(sString.length-1, sString.length) == ' ')
	{
		sString = sString.substring(0,sString.length-1);
	}
	return sString;
}
function verifEmail(email) {
   var reg = /^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]{2,}[.][a-z]{2,3}$/
   return (reg.exec(email)!=null)
}