function hidemenu()
{
	var id='',s='';
	for (i=0;i<arguments.length;i++)
		{
			id = 'm_' + arguments[i]; 
			s = document.getElementById(id);
			s.style.display='none';
		}
}

function board()
{
	w=screen.availWidth;
	if ((w<1200) && (w>900))
	{
		br = navigator.appName;
		a=br.indexOf("Microsoft");
		if (a>=0) {n=1;}
		else {n=0;}
		//document.write(a);
		img = document.getElementById("image_up");
		img.style.width = (w-img.offsetLeft-20-n)+"px";
		img = document.getElementById("image_down");
		img.style.width = (w-img.offsetLeft-20-n)+"px";
	}
}
//window.onload=board;