var backgr1="fileadmin/layout/header/Top_winter_01.jpg"
var backgr2="fileadmin/layout/header/Top_winter_02.jpg"
var backgr3="fileadmin/layout/header/Top_winter_03.jpg"

var cur=Math.round(6*Math.random())
if (cur<=1)
backgr=backgr1
else if (cur<=4)
backgr=backgr2
else
backgr=backgr3
document.write('<table background="'+backgr+'" border="0" cellpadding="0" cellspacing="0" width="100%" height="115">')