function showHideFilterPanel(showFilter, showColumn, hideColumn, tableName) 
{
	var showId = document.getElementById(showColumn);
	var tableId = document.getElementById(tableName);
	var hideId = document.getElementById(hideColumn);
	var hiddenId = document.getElementById('showFilter');
	var showStyle = 'none';
	var hideStyle = 'inline';
	var tableStyle = 'inline';
	var hiddenValue = 'true';
	
	if (showFilter == 'false')
		{
			showStyle = 'inline';
			hideStyle = 'none';
			tableStyle = 'none';
			hiddenValue = 'false';
		}
	
	if (showId != null) showId.style.display=showStyle;
	if (hideId != null) hideId.style.display=hideStyle;
	if (tableId != null) tableId.style.display=tableStyle;
	if (hiddenId != null) hiddenId.value=hiddenValue;
}

function trapKeyPress(btnName)
{
	if (event.keyCode == 13)
		{
			var btnId = document.getElementById(btnName);
					
			if (btnId != null) 
				{
					event.returnValue = false;
					event.cancel = true;
					btnId.click();
				}
		}
}