function mark() 
{
   var items = arguments.length;
   for (i = 0; i < items; i++)
   {
      document.getElementById(arguments[i]).style.backgroundColor="#000000";
      document.getElementById(arguments[i]).style.border="1px solid #acacac";
   }
} 

function doClear(theText) 
{
     if (theText.value == theText.defaultValue)
 {
         theText.value = "";
     }
 }