/*
visitCnt = document.cookie + ";";
	where_v = visitCnt.indexOf("cnt",0);
	allen = visitCnt.substring(where_v,visitCnt.length);
	start = allen.indexOf("=",0)+1;
	end = allen.indexOf(";",0);
alert(document.cookie)
visitCnt = allen.substring(start,end);

if(visitCnt == ""){
	visitCnt = 0;
}else{
	visitCnt++;
}

visitCnt = visitCnt%2;


if(visitCnt == 0){
	document.getElementById('topheadthird').style.backgroundImage = 'url(./common/img/bg_topmenu1.jpg)';
}else if(visitCnt == 1){
	document.getElementById('topheadthird').style.backgroundImage = 'url(./common/img/bg_topmenu2.jpg)';
}
document.cookie = "cnt=" + visitCnt;


*/

count=Math.floor(Math.random()*10);
flag=count%2;
if(flag == 0){
	document.getElementById('topheadthird').style.backgroundImage = 'url(./common/img/bg_topmenu1.jpg)';
}else{
	document.getElementById('topheadthird').style.backgroundImage = 'url(./common/img/bg_topmenu2.jpg)';
}