function getDocHeight() {
    var D = document;
    return Math.max(
        Math.max(D.body.scrollHeight, D.documentElement.scrollHeight),
        Math.max(D.body.offsetHeight, D.documentElement.offsetHeight),
        Math.max(D.body.clientHeight, D.documentElement.clientHeight)
    );
}

function getHview()
{
	hView=getDocHeight();
	$(document).ready(function(){
		
		jQuery.each(jQuery.browser, function(i, val) {
			if($.browser.msie && parseInt($.browser.version)>7) //solo per ie8 o superiori
				hView=getDocHeight()-4;
		});
	});
	hView = hView -140;
//	alert(hView)
	return hView;
}
document.write('<div id="contentleft" style="display:none; height:'+getHview()+'px">&nbsp;</div>');

window.onresize = resizeContentleft
function resizeContentleft()
{
	//alert("resize")
	obj = document.getElementById('contentleft')
	if(obj)
		obj.style.height = getHview()+'px';	
}

function displaySubmenu(n)
{
	obj = document.getElementById('contentleft')
	if(obj)
	{ 
		obj.style.display = 'block';
		for(i=1; i<4; i++)
		{
			submenu = document.getElementById('submenu'+i);
			if(submenu)
			{
				if(i==n) submenu.style.display='block'
				else submenu.style.display='none'
			}
		}
	}
}