//
// Copyright (c) 2002 ComponentOne L.L.C. All rights reserved.
// Version 1.1.20024.1
//

function c1g_getNodeLevel(row)
{
	var node = c1g_getattr(row, "nodeLevel");
	return (node == null)? -1: parseInt(node);
}
function c1g_getImgElement(row)
{
	return row.cells[0].firstChild;
}

function c1g_showHide(e, imgCollapsed, imgExpanded, groupby)
{
	if( !e ) e = window.event;
	
	// find row that was clicked
	var src = null; //event.srcElement;
	if( e.srcElement )
		src = e.srcElement;
	else
		src = e.currentTarget;
	var evtsrc = src;

	while (src != null && src.tagName != "TR")
		src = c1g_getParent(src)
	if (src == null) return;

	// get the node level
	var level = c1g_getNodeLevel(src);
	if (level < 0) return;
	
	// loop through all rows below this one until the next node
	var table = c1g_getParent(src);
	while (table != null && table.tagName != "TABLE")
		table = c1g_getParent(table);
	if (table == null) return;
	var rows = table.rows;
	var display = "";
	var lastlvl = true;
	for (var row = src.rowIndex + 1; row < rows.length; row++)
	{
		// stop at the next node higher than or equal to the source
		var rlevel = c1g_getNodeLevel(rows[row]);
		if (rlevel > -1 && rlevel <= level) break;
		if (c1g_getattr(rows[row], "pager") || c1g_getParent(rows[row]).tagName == "TFOOT") break;
		
		// handle detail rows
		if ((groupby && (level < rlevel || rlevel < 0)) || (!groupby && rlevel < 0))
		{
			// hiding or showing?
			if (display.length == 0)
				display = (rows[row].style.display == "none")? "": "none";
			
			// flip visibility
			if( groupby )
			{
				// if we're expanding only expand the next level up
				if( display == "" )
				{
					// group row
					// if( level < rlevel )
					if( level+1 == rlevel )
					{
						lastlvl = false;
						var img = c1g_getImgElement(rows[row]);
						img.src = imgCollapsed;
						rows[row].style.display = display;
					}
					// datarow
					if( lastlvl && rlevel < 0 )
						rows[row].style.display = display;
				}
				else
				{
					if( level < rlevel )
					{
						var img = c1g_getImgElement(rows[row]);
						img.src = imgExpanded;
						rows[row].style.display = display;
					}
					if( rlevel < 0 )
						rows[row].style.display = display;
				}
			}
			else
			{
				if( rlevel < 0 )
					rows[row].style.display = display;
			}
		}
	}

	// flip image
	src = evtsrc;
	if (src.tagName == "IMG")
		src.src = (display == "none")? imgCollapsed: imgExpanded;
}