function toggleLayer(whichLayer, mode)
{        
    // mode = 1, show layer
    // mode = 0, hide layer    

    if (document.getElementById)
    {
        // this is the way the standards work
        var style2 = document.getElementById(whichLayer).style;        
    }
    else if (document.all)
    {
         // this is the way old msie versions work
        var style2 = document.all[whichLayer].style;
    }
    else if (document.layers)
    {
        // this is the way nn4 works
        var style2 = document.layers[whichLayer].style;     
    }    

    if (mode == 1)
    {
        style2.display = "block";
    }
    else if (mode == 0)                       
    {
        style2.display = "none";
	}
}

var isOpen = false;

function toggleLayerCS(whichLayer)
{
	if (isOpen)
	{
		toggleLayer(whichLayer, 0);
		isOpen = false;
		toggleLayer('pageSnapUpPanel',0);toggleLayer('pageSnapDownPanel',1);
	}
	else
	{
		toggleLayer(whichLayer, 1);
		isOpen = true;
		toggleLayer('pageSnapUpPanel',1);toggleLayer('pageSnapDownPanel',0);		
	}
}