// JavaScript Document

function sdiv1(elm1,elm2,elm3,elm4){
	 var a,b,c,d;
	 
	 a = document.getElementById(elm1);
	 b = document.getElementById(elm2);
	 c = document.getElementById(elm3);
	 d = document.getElementById(elm4);

	 a.style.backgroundImage = "url(images/btn_cnt_1_visited.jpg)";
     b.style.backgroundImage = "url(images/btn_cnt_2.jpg)";
	 c.style.display='block';
	 d.style.display='none';
	 
	 
}

function sdiv2(elm1,elm2,elm3,elm4){
	 var a,b,c,d;
	 
	 a = document.getElementById(elm1);
	 b = document.getElementById(elm2);
 	 c = document.getElementById(elm3);
	 d = document.getElementById(elm4);

	 a.style.backgroundImage = "url(images/btn_cnt_1.jpg)";
     b.style.backgroundImage = "url(images/btn_cnt_2_visited.jpg)";
	 c.style.display='block';
	 d.style.display='none';
	 
}