<!--
var old;
var bck;  /* глобальная переменная */
/* функция смены отбражения блоков */
function do_menu(i)
{if(!old) {old="con1";} 
document.getElementById(old).style.display="none";
document.getElementById(i).style.display="block";
switch (i){
case "con1":
document.getElementById("c3").style.background="none";
document.getElementById("c1").style.background="transparent url(/i/images/fon_td1_zag.gif) no-repeat left bottom";
document.getElementById("c2").style.background="transparent url(/i/images/fon_td_zag1.gif) no-repeat right bottom";
break;
case "con2":
document.getElementById("c1").style.background="none";
document.getElementById("c3").style.background="none";
document.getElementById("c2").style.background="transparent url(/i/images/fon_td2_zag.gif) no-repeat left bottom";
break;
case "con3":
document.getElementById("c2").style.background="none";
document.getElementById("c3").style.background="transparent url(/i/images/fon_td3_zag.gif) no-repeat right bottom";
document.getElementById("c1").style.background="transparent url(/i/images/fon_td_zag1.gif) no-repeat right bottom"; 	  
break;
}
old=i;}
-->