function isCorrectNumber(formname) {
      var form = eval("document.registrationForm." + formname);
		//alert(form);
      for(var i = 0; i < form.value.length; i++) {
         var chr = form.value.substr(i,1);
         if(chr < '0' || chr > '9') {            
            alert("¼ýÀÚ¸¸ ÀÔ·ÂÇØ ÁÖ¼¼¿ä");break;
			return false;
         }
      }
      return true;   
   }

   function isCorrectID(formname) {
      var form = eval("document.registrationForm." + formname);

      if(form.value.length < 4 || form.value.length > 10) {
         return false;
      }
      for(var i = 0; i < form.value.length; i++) {
         var chr = form.value.substr(i,1);         
         if((chr < '0' || chr > '9') && (chr < 'a' || chr > 'z')) {
            return false;
         }
      }
      return true;   
   }


   function isCorrectPW(formname) {
      var form = eval("document.registrationForm." + formname);
      
      if(form.value.length < 4 || form.value.length > 8) {
         return false;
      }
      for(var i = 0; i < form.value.length; i++) {
         var chr = form.value.substr(i,1);         
         if((chr < '0' || chr > '9') && (chr < 'a' || chr > 'z') && (chr < 'A' || chr > 'Z')) {
            return false;
         }
      }
      return true;   
   }

   function isCorrectJuminNumber(ju_id1,ju_id2) {
    
      var codesum = 0;
      var coderet = 0;
      //ÀÚ¸®¼ö È®ÀÎ
      if( ju_id1.length != 6 || ju_id2.length != 7 ) {
         return false;
      }
    	
      //¼ýÀÚÀÎÁö
      codesum = ( eval( ju_id1.substring( 0, 1 ) ) * 2 )
       		+ ( eval( ju_id1.substring( 1, 2 ) ) * 3 )
      		+ ( eval( ju_id1.substring( 2, 3 ) ) * 4 )
      		+ ( eval( ju_id1.substring( 3, 4 ) ) * 5 )
      		+ ( eval( ju_id1.substring( 4, 5 ) ) * 6 )
       		+ ( eval( ju_id1.substring( 5, 6 ) ) * 7 )
       		+ ( eval( ju_id2.substring( 0, 1 ) ) * 8 )
      		+ ( eval( ju_id2.substring( 1, 2 ) ) * 9 )
       		+ ( eval( ju_id2.substring( 2, 3 ) ) * 2 )
       		+ ( eval( ju_id2.substring( 3, 4 ) ) * 3 )
       		+ ( eval( ju_id2.substring( 4, 5 ) ) * 4 )
      		+ ( eval( ju_id2.substring( 5, 6 ) ) * 5 );
      coderet = 11 - (eval(codesum % 11));
      if(coderet >= 10)
         coderet = coderet - 10;
      if(coderet >= 10)
         coderet = coderet - 10;
      if(eval( ju_id2.substring( 6, 7 ) ) != coderet ) {
         return false;
      }      	

      return true;
   }

   function openIdWindow(ref) {
      var id = eval(document.registrationForm.id);
            
      if(!id.value) {
         alert('¾ÆÀ̵ð(ID)¸¦ ÀÔ·ÂÇϽŠÈÄ¿¡ È®ÀÎÇϼ¼¿ä!');
         id.focus();
         return;
      } else {
         ref = ref + "?id=" + id.value;
         var window_left = (screen.width-640)/2;
         var window_top = (screen.height-480)/2;
         window.open(ref,"checkIDWin",'width=300,height=190,status=no,top=' + window_top + ',left=' + window_left + '');
      }
   }

   function openZipWindow(ref,what) {
      var window_left = (screen.width-640)/2;
      var window_top = (screen.height-480)/2;
      ref = ref + "?what=" + what;      
      window.open(ref,"zipWin",'width=395,height=250,status=no,top=' + window_top + ',left=' + window_left + '');
   }

   function replace_id() {
      opener.document.forms[0].id.select();
      self.close();
   }