function fncChkEmail() {
   var j_loop;

   jv_semail = document.frmLetter.m_email.value;
   if(jv_semail==''){
        alert('E-mailÀ» ÀÔ·ÂÇØ Áֽʽÿä.');
        document.frmLetter.m_email.focus();
        return;
   }

//   if(Check_Space(jv_semail) == false){
//          alert('E-mail¿¡´Â °ø¶õÀÌ µé¾î°¥ ¼ö ¾ø½À´Ï´Ù.');
//          document.frmLetter.m_email.focus();
//          return;
//   }

   jv_semail = document.frmLetter.m_email.value;
   if((jv_semail.indexOf('@', 0) == -1) || (jv_semail.indexOf('.', 0) == -1) || (jv_semail.indexOf('@.') != -1) || (jv_semail.indexOf('..') != -1) || (jv_semail.indexOf('&') != -1) || (jv_semail.indexOf(';') != -1) || (jv_semail.indexOf(',') != -1)){
       alert('E-mailÇü½ÄÀÌ ¸ÂÁö ¾Ê½À´Ï´Ù.');
       document.frmLetter.m_email.focus();
       return;
   }

   var j_cnt = 0;
   for(j_loop = 0;j_loop < jv_semail.length;j_loop++)
   {
     if(jv_semail.charAt(j_loop) == '@')
       j_cnt++;
   }

   if(j_cnt > 1){
       alert('E-mailÇü½ÄÀÌ ¸ÂÁö ¾Ê½À´Ï´Ù.');
       document.frmLetter.m_email.focus();
       return;
   }
  
   for(j_loop = jv_semail.indexOf('@')+1;j_loop < jv_semail.length;j_loop++)
   {
     if(jv_semail.charCodeAt(j_loop) > 255){
       alert('E-mail µµ¸ÞÀο¡ ÇѱÛÀ» ÀÔ·ÂÇÒ ¼ö ¾ø½À´Ï´Ù.');
       document.frmLetter.m_email.focus();
       return;
     }
   }

   jv_semail = document.frmLetter.m_email.value;
   if (confirm("ÀÔ·ÂÇÑ À̸ÞÀÏ ÁÖ¼Ò´Â "+jv_semail+" ÀÔ´Ï´Ù. ÀÌ ÁÖ¼Ò°¡ ¸Â½À´Ï±î??"))
      //return true
	  document.frmLetter.submit();
	  
   else{
      document.frmLetter.m_email.focus();
      return;
   }
}