function getObject(obj) {
  var theObj;
  if(document.all) {
    if(typeof obj=="string") {
      return document.all(obj);
    } else {
      return obj.style;
    }
  }
  if(document.getElementById) {
    if(typeof obj=="string") {
      return document.getElementById(obj);
    } else {
      return obj.style;
    }
  }
  return null;
}

function toCount(entrance,exit,text,characters) {
  var entranceObj=getObject(entrance);
  var exitObj=getObject(exit);
  var length=characters - entranceObj.value.length;
  if(length <= 0) {
    length=0;
    text='<span class="disable"> '+text+' </span>';
    entranceObj.value=entranceObj.value.substr(0,characters);
  }
  exitObj.innerHTML = text.replace("{CHAR}",length);
}


/*
]]]]]]]]]]]]]]]]



<div id="overDiv" style="position:absolute; visibility:hidden; z-index:1000;"></div>
<form action="#" method="post">
<table align="center" border="0" cellspacing="1" cellpadding="5">
  <tr>
    <td align="right"><span class="options">Field Name</span></td>
    <td class="2">
      <input type="text" id="eBann" name="bannerURL" maxlength="100" size="60" onKeyUp="toCount('eBann','sBann','{CHAR} characters left',100);">
      <br>
      <span id="sBann" class="minitext">100 characters left.</span>
    </td>
  </tr>
</table>
</form>
*/