function autoComplete (field, select, property, forcematch) 
{
     var found = false;
     
     for (var i = 0; i < select.options.length; i++) 
     {
          if (select.options[i][property].toUpperCase().indexOf(field.value.toUpperCase()) == 0) 
          {
               found=true; 
               break;
          }
     }
     
     if (found) 
     { 
          select.selectedIndex = i; 
     }
     
     else 
     {
          select.selectedIndex = -1; 
     }
     
     if (field.createTextRange) 
     {
          if (forcematch && !found) 
          {
               field.value=field.value.substring(0,field.value.length-1); 
               return;
          }
          
          var cursorKeys ="8;46;37;38;39;40;33;34;35;36;45;";
          
          if (cursorKeys.indexOf(event.keyCode+";") == -1) 
          {
               var r1 = field.createTextRange();
               var oldValue = r1.text;
               var newValue = found ? select.options[i][property] : oldValue;
     
               if (newValue != field.value) 
               {
                    field.value = newValue;
                    var rNew = field.createTextRange();
                    rNew.moveStart('character', oldValue.length) ;
                    rNew.select();
               }
          }
     }
}