function $(x){
    return document.getElementById(x);
}
rnd.today=new Date(); 
rnd.seed=rnd.today.getTime(); 
function rnd(){ 
	rnd.seed = (rnd.seed*9301+49297) % 233280; 
	return rnd.seed/(233280.0); 
}
function rand(number){ 
	return Math.ceil(rnd()*number)-1; 
}

var pushShow="";
function showPushLink(num){
	if(!num&&num!=0){
		mainPushNum++;
		if(mainPushNum>3) mainPushNum=0;
		num=mainPushNum;
	}
	for(i=0;i<4;i++){
		if($("linkPush"+i)){
			$("linkPush"+i).className="linkNormal";
			$("linkPush"+i).innerHTML=pushName[i];
		}
	}
	if($("linkPush"+num)){
		$("linkPush"+num).className="linkPushHere";
		$("linkPush"+num).innerHTML=pushName[num];
	}
	if($("pushImg")){
		$("pushImg").src=pushSrc[num];
		$("pushImg").alt=pushName[num];
	}
	if($("pushImgLink")){
		$("pushImgLink").href=pushLink[num];
	}	
}
//³υΚΌ»―
for(i=0;i<4;i++){
	pushShow+='<a class=linkNormal href="'+pushLink[i]+'" onmouseover="showPushLink('+i+');clearInterval(rollId)" id="linkPush'+i+'" target="_blank" className="linkNormal">'+pushName[i]+'</a>';}
if($("linkPush")){
	$("linkPush").innerHTML=pushShow;
}
var mainPushNum=rand(4);
if($("linkPush"+mainPushNum)){
	$("linkPush"+mainPushNum).className="linkPushHere";
	$("linkPush"+mainPushNum).innerHTML=pushName[mainPushNum];
}
if($("mainPush")){
	$("mainPush").innerHTML='<a href="'+pushLink[mainPushNum]+'" target="_blank" id="pushImgLink" onmouseover="clearInterval(rollId)" onmouseout="showAtTime()"><img src="'+pushSrc[mainPushNum]+'" name="pushImg" width="540" height="283" id="pushImg" alt="'+pushName[mainPushNum]+'" /></a>';
}
var rollId=setInterval("showPushLink()",3000);
function showAtTime(){
	showPushLink();
	rollId=setInterval("showPushLink()",3000);
}