// JavaScript Document

function alternatecolor(id){ 
  var table = document.getElementById(id);  
  var rows = table.getElementsByTagName("tr");

  if(document.getElementsByTagName){  
   for(i = 0; i < rows.length; i++){           
     if(i % 2 == 0){ 
       rows[i].bgColor = "#EFEFEF";
     }else{ 
       rows[i].bgColor = "#FFFFFF";
     }      
   }
 }
}