function createBoxCornerFromClass(tag, tagclass, upperClass, lowerClass)
{
	col = window.document.getElementsByTagName(tag);
	$i = 0;
	while($i < col.length)
		if(col[$i].className != tagclass)
		{
			$i++;
		}
		else
		{
			var new_id = "box1_"+$i;
			col[$i].id = new_id;
			if(upperClass != null || upperClass != "")
			{
				var box1_uc = window.document.createElement("div");
				box1_uc.className = upperClass;
				window.document.getElementById(new_id).parentNode.insertBefore(box1_uc, window.document.getElementById(new_id));
				$i++;
			}
			if(lowerClass != null || lowerClass != "")
			{
				var box1_lc = window.document.createElement("div");
				box1_lc.className = lowerClass;
				window.document.getElementById(new_id).appendChild(box1_lc);
			}
			$i++;
		}
}

function createBoxCornerFromClassIfExists(navid, upperClass, lowerClass, existId)
{
	if(window.document.getElementById(navid) != null)
	{
		if(upperClass != null || upperClass != "")
		{
			var box1_uc = window.document.createElement("div");
			box1_uc.className = upperClass;
			window.document.getElementById('nav4bc').insertBefore(box1_uc, window.document.getElementById('nav4'));
		}
		if(lowerClass != null || lowerClass != "")
		{
			var box1_lc = window.document.createElement("div");
			box1_lc.className = lowerClass;
			window.document.getElementById('nav4').appendChild(box1_lc);
		}
	}
}

window.onload = function()
{
	createBoxCornerFromClass("div", "div_box1", "box1_uc", "box1_lc");
	createBoxCornerFromClass("div", "div_box2", "", "box2_lc");
	createBoxCornerFromClass("div", "div_box3_fullwidth", "box3_uc", "box3_lc");
	if(window.document.getElementById('levelrec3') == null && window.document.getElementById('nav4') != null)
	{
		window.document.getElementById('nav4').style.display = "none";
	}
	if(window.document.getElementById('levelrec3') != null)
	{
		createBoxCornerFromClass("div", "nav4", "levelrec4_uc", "");
		createBoxCornerFromClass("div", "nav4", "", "levelrec4_lc");
	}
}