var NS4DOM = (document.layers) ? true:false;


var IEDOM = (document.all) ? true:false;


var W3CDOM = (document.getElementById) ? true:false;





function getObject(id) {


   if (NS4DOM) ref="document."+id;


   else if (IEDOM) ref=id;


   else if (W3CDOM) ref="document.getElementById('"+id+"')";


   var object=eval(ref);


   return object;


}





function hideIt(id) {


   if (NS4DOM) getObject(id).visibility="hide";


   else if (IEDOM || W3CDOM) getObject(id).style.visibility="hidden";


}





function showIt(id) {


   if (NS4DOM) getObject(id).visibility="show";


   else if (IEDOM || W3CDOM) getObject(id).style.visibility="visible";


}