function valEmail(sEmail)
{
  var sPattern=/^[a-z0-9_\-]+(\.[_a-z0-9\-]+)*@([_a-z0-9\-]+\.)+([a-z]{2}|aero|arpa|biz|com|coop|edu|gov|info|int|jobs|mil|museum|name|nato|net|org|pro|travel)$/gi;
  //var re=new RegExp(sPattern);
  sEmail=trim(sEmail);
  ret=sEmail.match(sPattern);
  if (ret==null)
  {
    return false;
  }
  else
  {
    return true;
  }
}

/**
*
*  Javascript trim, ltrim, rtrim
*  http://www.webtoolkit.info/
*
*
**/

function trim(str, chars) {
    return ltrim(rtrim(str, chars), chars);
}

function ltrim(str, chars) {
    chars = chars || "\\s";
    return str.replace(new RegExp("^[" + chars + "]+", "g"), "");
}

function rtrim(str, chars) {
    chars = chars || "\\s";
    return str.replace(new RegExp("[" + chars + "]+$", "g"), "");
}