var good;
function checkEmailAddress(field) {
// the following expression must be all on one line...
var goodEmail = field.value.match(/\b(^(\S+@).+((\.com)|(\.net)|(\.edu)|(\.mil)|(\.gov)|(\.org)|(\..{2,2}))$)\b/gi);
  if (goodEmail) {
    good = true;
  } else {
    alert('¸ÞÀÏÁÖ¼Ò¸¦ ÀÔ·ÂÇØÁÖ¼¼¿ä.');
    field.focus();
    field.select();
    good = false;
  }
}

u = "¹Ì±¹ ÀǷẸÇèÀÌ Àû¿ëµÇ¾î ¸¹Àº ¹Ì±¹ÀÇ»ç ºÐµéÀÌ ¹ß, ´Ù¸®, ¹«¸­, Ç㸮°¡ ¾ÆÇ ºÐµé¿¡°Ô ó¹æÇÏ´Â ½Å¹ß »çÀÌÆ® ¼Ò°³ : www.zcoil.kr ";
m = " ";

function mailThisUrl() {
  good = false
  checkEmailAddress(document.eMailer.address);
  if (good) {
    // the following expression must be all on one line...
    window.location = "mailto:"+document.eMailer.address.value+"?subject="+m+"&body="+u;

  }
}