function displayDropDown(VisionPageID)
{			
	//$('#dropDownMenuBottom').append(TreePageIds[i]);
	
	var lineHeight = 30;
	var $openedNode;
	
	$('.main_nav a').each(function(){

		if(VisionPageID == $(this).attr('id'))
		{
			$node = $openedNode = $(this);
			$node.parent().addClass('leftnav_node_iscurrent');//the current li
			while($node.parent().attr('class').indexOf('navlevel0') < 0)
			{		
				$node.parent().siblings('li').addClass('leftnav_node');// the other li's
				$node.parent().parent('ul').addClass('leftnav_node_wrapper');//the ul parent
				$node.parent().parent().parent('li').addClass('leftnav_node_haschildren');//the li parent (parent of above ul)
				$node = $node.parent();				
			}
				
			//level 1 node (has children) is selected
			if($(this).siblings().children('li').size() > 0)
			{						
				$(this).parent('li').addClass('leftnav_node_haschildren');
				$(this).siblings('ul').addClass('leftnav_node_wrapper');
				$(this).siblings().children('li').addClass('leftnav_node');
			}	
					
			var childCount = $('li.leftnav_node_haschildren:last > ul > li').size();
			
			var lineCount = 0;
			var siblingsLineCount = 0;

			$('li.leftnav_node_haschildren:last > ul > li').each(function(){
				linkLength = $('> a', this).text().length;
				
				if(linkLength/5 >= 6){	
					lineCount = lineCount + Math.round(linkLength/40);				
				}
			});		
			$('li.leftnav_node_haschildren:last').siblings().each(function(){
				linkLength = $('> a', this).text().length;
				
				if(linkLength/5 >= 6){	
					siblingsLineCount = siblingsLineCount + Math.round(linkLength/40);				
				}
			});						
			$('li.leftnav_node_haschildren:last').height(lineHeight * (childCount - lineCount + 0.5) + (lineHeight + 18) * lineCount);		
						
			var totalMenuLi = $('li.leftnav_node_haschildren ul li.leftnav_node').size() + $('li.leftnav_node_haschildren ul li.leftnav_node_iscurrent').size();
				
			if($openedNode.parent().parent().attr('class').indexOf('navlevel2') >= 0)
			{	
				$('.navlevel1 > .leftnav_node_haschildren').height($('.navlevel1 > .leftnav_node_haschildren').height());
				$('.navlevel0 > .leftnav_node_haschildren').parent().height((lineHeight) * parseInt(totalMenuLi - lineCount + 2) + lineHeight * lineCount + 16);				
			}
			else if($openedNode.parent().parent().attr('class').indexOf('navlevel1') >= 0)
			{			
				if(lineCount == 0)
				{					
					if($('.navlevel2.leftnav_node_wrapper').size() > 0)
					{	
						if($('.navlevel1 > .leftnav_node_haschildren').size() > 0)
						{								
							$('.navlevel1 > .leftnav_node_haschildren').height($('.navlevel1 > .leftnav_node_haschildren').height() + lineCount * 10 + 10);
							$('.navlevel0 > .leftnav_node_haschildren').parent().height((lineHeight) * parseInt(totalMenuLi + 1) + lineCount + 18);
						}
						else
						{		
							$('.navlevel0 > .leftnav_node_haschildren').parent().height((lineHeight) * parseInt(totalMenuLi + 1) + 18);
						}
					}
					else
					{
						$('.navlevel0 > .leftnav_node_haschildren').parent().height((lineHeight) * parseInt(totalMenuLi + 1) + 18);
					}
				}
				else
				{			
					$('.navlevel0 > .leftnav_node_haschildren').parent().height(lineHeight * parseInt(totalMenuLi) + (lineHeight + 16.5) * lineCount);
					
				}
			}
			else
			{	
				$('.navlevel0 > .leftnav_node_haschildren').parent().height((lineHeight) * parseInt(totalMenuLi - lineCount + 1) + (lineHeight + 16.5) * lineCount + 18);
			}
			
		}				
	});
	
}