function f()
	{
		if(screen.width < 1100)
			document.getElementById('body').style.width= 1100 + 'px';
		else
		{
			document.getElementById('body').style.width=(window.innerWidth? window.innerWidth : document.body.clientWidth);
		}
	}
	
	function show()
	{
			document.getElementById('room').style.display = "inline";
			document.getElementById('mainul').style.height = 475 + "px";
	}
	
	function show_menu(menuid)
	{
		document.getElementById(menuid).style.background="url(images/arrow.gif) no-repeat left center";
	}
	
	function change_img(url)
	{
		document.getElementById('big_picture').src=url;
	}