// JavaScript Document
pic1= new Image(); 
pic1.src="images/srch_pnl_b.gif"; 

pic2= new Image(); 
pic2.src="images/buy_btn_b.gif"; 

function roll(img_src1, btn_name)
   {
	myDiv = document.getElementById(btn_name);
	myDiv.style.backgroundImage="url('"+img_src1+"')";
  
   }