// JavaScript Document

function Blink(obj_name) {
// ex. 
// <body onLoad="Blink('blink');">
//<span ID="blink">This sentence is blinking</span>
   obj=document.getElementById(obj_name);
	   if (obj.style.visibility=="hidden") obj.style.visibility="visible";
    	  else obj.style.visibility="hidden";
	   window.setTimeout("Blink();",500);

}