/*-------------------------------------------------------------------------*/
// D21-Sliding Menu Affect
// © 2005 Dean (D-Scripting)
/*-------------------------------------------------------------------------*/

var menu_slide       = true;
var menu_slide_close = true;
var menu_slide_int   = 0;
var menu_slide_speed = 15;
var menu_slide_timer;

function d21_sma_initiate_slide_open(id)
{
	var obj = document.getElementById(id);
	menu_slide_int = Math.ceil(obj.offsetHeight / menu_slide_speed);
	d21_sma_slide_da_menu(obj.id, 0, false);
}

function d21_sma_initiate_slide_close(id)
{
	var obj = document.getElementById(id);
	menu_slide_int = Math.ceil(obj.offsetHeight / menu_slide_speed);
	d21_sma_slide_da_menu(obj.id, obj.offsetHeight, true);
}

function d21_sma_slide_da_menu(id, h, r)
{
	var o = document.getElementById(id);
	var r = (typeof(r) != 'undefined' && r == true) ? true : false;

	if (r)
	{
		if (h > 0)
		{
			h -= menu_slide_int;
			o.style.clip = 'rect(auto, auto, '+h+'px, auto)';
			menu_slide_timer = setTimeout("d21_sma_slide_da_menu('"+id+"', "+h+", "+r+");", 0);
		}
		else
		{
			d21_sma_stop_sliding(id, r);
		}
	}
	else
	{
		if (h < o.offsetHeight)
		{
			h += menu_slide_int;
			o.style.clip = 'rect(auto, auto, '+h+'px, auto)';
			menu_slide_timer = setTimeout("d21_sma_slide_da_menu('"+id+"', "+h+", "+r+");", 0);
		}
		else
		{
			d21_sma_stop_sliding(id, r);
		}
	}
}

function d21_sma_stop_sliding(id, r)
{
	clearTimeout(menu_slide_timer);

	if (r)
	{
		document.getElementById(id).style.display = 'none';
	}
	else
	{
		document.getElementById(id).style.clip = 'rect(auto, auto, auto, auto)';
	}	
}