var $=function(_id) {
	return document.getElementById(_id);
}

function bodyHeight() {
	var cobj = document.body;
	return cobj.scrollHeight;
}

function setMenuHeight() {	
	var _height=bodyHeight(); 
	$("lnav").style.height=(_height - 210 - 90)+"px";	
}

window.onload=function() {
	try { setMenuHeight(); } catch(e) {}
}

window.onresize=function() {
	try { setMenuHeight(); } catch(e) {}
}