/* Tree View Grid Properties & Functions */
	var plusImage = "images/arrow_Nav_rt.gif";
	var minusImage = "images/arrow_Nav_dwn.gif";
	var imageTagPrefix = "img";
	var nodeSeparator = ".";
	var n = 1;

/*	Function to collapse a Node
	Function will be called Recursively till the Last Child of the Node
*/
	function Collapse(Node)
	{	
		/* Get n'th child of Node <n starts from 1 till the last child>*/
		objChildNode = document.getElementById(Node + nodeSeparator + n);
		
		/* Get image object of Node */
		objImg	= document.getElementById(imageTagPrefix + nodeSeparator + Node);
		
		/* Check if Child exists. If does not exist then Reset n = 1 & exit function & */
		if(objChildNode != null)
		{	
			/* Toggle the Child Status i.e. if visible then make it invisible & vis-versa */
			if (objChildNode.style.display == "")
			{	
				/* Close all the Childs, Sub-Childs and so on of the Node*/
				if (objImg != null)objImg.src = plusImage;
				closeAllChilds(Node)
				return;
			}else 
			{	
				objChildNode.style.display = "";
				if (objImg != null)objImg.src = minusImage;
			}
			/* Call Collapse for the Next Child be increamenting n*/
			n = n + 1;
			Collapse(Node);
		}else n = 1;
	}

	/*if p_direction = 0 then Close else Open*/
	function ExplicitCollapse(Node,p_direction)
	{	
		objChildNode = document.getElementById(Node + nodeSeparator + n);
		
		objImg	= document.getElementById(imageTagPrefix + nodeSeparator + Node);
		
		if(objChildNode != null)
		{	
			if (p_direction == "0")
			{	
				objChildNode.style.display = "none";
				if (objImg != null)objImg.src = plusImage;
				if(!closeAllChilds(objChildNode.id)) return false;
			}else 
			{	
				objChildNode.style.display = "";
				if (objImg != null)objImg.src = minusImage;
			}

			n = n + 1;
			ExplicitCollapse(Node,p_direction);
		}else n = 1;
	}

/*	Function to close all the childs of a Node
	As Each Child Node ID contains its Parent Node ID, Close all the rows having the Node ID as a prefix in their IDs.
*/
	function closeAllChilds(nNode)
	{	var tempNode,objTempNode,objNode,tempImg,objBody;
		objNode= document.getElementById(nNode);
		/* Get the Parent Element of Node ie. the Table Object */
		objTable = objNode.parentElement;
		var tagNm = objTable.tagName;
		/* Get the Parent Element is not a Table then exit function */
		if(tagNm.toUpperCase() == "TBODY")
		{	
			/* For each TR of the Table*/
			for(i=0;i<objTable.rows.length;i++)
			{	
				/* Get the ID of the TR i.e. Node ID */
				tempNode = objTable.rows[i].id;
				
				/* If the ID of the TR contains nNode then make the TR invisible*/
				if (tempNode != nNode)
				{	if(tempNode.indexOf(nNode) >= 0)
					{	objTempNode	= document.getElementById(tempNode);
						tempImg		= document.getElementById(imageTagPrefix + nodeSeparator + tempNode);
						if (tempImg != null)tempImg.src = plusImage;
						objTempNode.style.display = "none";
					}
				}
			}
		}else
		{	alert("Table Tag not found");
			return false;
		}
		return true;
	}
/*	Function to keep a Node open onLoad
	This function also opens up the corresponding Parent Nodes of that perticular Node
*/
	function OpenNode(strNode,p_direction)
	{	var objNode;
		var arrNode = strNode.split(nodeSeparator);
		var str = "";
		for(i=0;i<arrNode.length;i++){
			if(str == "")
			{  str = arrNode[i];
			}else
			{
			   str = str + nodeSeparator + arrNode[i];
			}
			objNode = document.getElementById(str);
			if (objNode != null)
			{
				if (p_direction == "1")
				{
					ExplicitCollapse(str,p_direction);
				}else
				{
					Collapse(str);
				}
			}
			 
		}
	}