today = new Date();
   //as no date has been entered, then it is taken as today. 
   //today is just a variable and is not a keyword! 
   hour = today.getHours();
   
   //hour = 20;
   
   		if ((hour >= 0) && (hour < 6)) {
   			strImage = "topHeader_6PM.jpg";
   		}
   		if ((hour >= 5) && (hour < 18)) {
   			strImage = "topHeader_6AM.jpg";
   		}
   		if ((hour >= 18) && (hour <= 23)) {
   			strImage = "topHeader_6PM.jpg";
   		}
   
document.write("<a href=\"/\"><img src=\"/Portals/57/images/"+strImage+"\" alt=\"104.1 The Truth\" border=\"0\" /></a>");