function turnboard(){
	if(boardindex<bd.length-1)boardindex++;else boardindex=0;
	exboard();
}
function exboard(){
	for(var i=0;i<bd.length;i++)if(i!=boardindex&&bd[i].offsetHeight>22){
		bd[i].getElementsByTagName("IMG")[0].src="images/add.gif";
		bd[i].style.height=(bd[i].offsetHeight<23?15:bd[i].offsetHeight-9)+"px";
	}
	clearTimeout(boardtime);
	if(bd[boardindex].offsetHeight<57){
		bd[boardindex].getElementsByTagName("IMG")[0].src="images/sub.gif";
		bd[boardindex].style.height=(bd[boardindex].offsetHeight>56?50:bd[boardindex].offsetHeight-5)+"px";
		boardtime=setTimeout("exboard()",1);
	}
}
var bd=document.getElementsByName("board"),boardindex=0;
var boardtime=null,boardinter=setInterval("turnboard()",5650);
for(var i=0;i<bd.length;i++){
	bd[i].index=i;
	bd[i].onmouseover=function(){
		clearInterval(boardinter);
		boardindex=this.index;
		boardtime=setTimeout("exboard()",1);
	}
	bd[i].onmouseout=function(){
		boardindex=this.index;
		boardinter=setInterval("turnboard()",5650);
	}
}
function turnlevel(){
	if(levelindex<bl.length-1)levelindex++;else levelindex=0;
	exlevel();
}
function exlevel(){
	for(var i=0;i<bl.length;i++)if(i!=levelindex&&bl[i].offsetHeight>22){
		bl[i].getElementsByTagName("IMG")[0].src="images/addmin.gif";
		bl[i].style.height=(bl[i].offsetHeight<23?15:bl[i].offsetHeight-9)+"px";
	}
	clearTimeout(leveltime);
	if(bl[levelindex].offsetHeight<67){
		bl[levelindex].getElementsByTagName("IMG")[0].src="images/submin.gif";
		bl[levelindex].style.height=(bl[levelindex].offsetHeight>66?60:bl[levelindex].offsetHeight-5)+"px";
		leveltime=setTimeout("exlevel()",1);
	}
}
var bl=document.getElementsByName("level"),levelindex=0;
var leveltime=null,levelinter=setInterval("turnlevel()",3000);
for(var i=0;i<bl.length;i++){
	bl[i].index=i;
	bl[i].onmouseover=function(){
		clearInterval(levelinter);
		levelindex=this.index;
		leveltime=setTimeout("exlevel()",1);
	}
	bl[i].onmouseout=function(){
		levelindex=this.index;
		levelinter=setInterval("turnlevel()",3000);
	}
}