// JavaScript Document
var timeout	= 50;
var closetimer	= 0;
var ddmenuitem	= 0;
var ddmenuparentimg = '';

// open hidden layer
function mopen(id,img)
{	
	if(img == null) img = '';
	// cancel close timer
	mcancelclosetime();
	// close old layer
	if(ddmenuitem) ddmenuitem.style.display = 'none';
	// get new layer and show it
	ddmenuitem = document.getElementById(id);
	ddmenuitem.style.display = 'block';
	if(ddmenuparentimg != '') document.getElementById(ddmenuparentimg).src = document.getElementById(ddmenuparentimg).outImage.src;	//Ensure to turn off all others first
	ddmenuparentimg = img;
	if(ddmenuparentimg != '') document.getElementById(ddmenuparentimg).src = document.getElementById(ddmenuparentimg).overImage.src;
}
// close showed layer
function mclose()
{
	if(ddmenuitem) {
		ddmenuitem.style.display = 'none';
		if(ddmenuparentimg != '') document.getElementById(ddmenuparentimg).src = document.getElementById(ddmenuparentimg).outImage.src;
	}
}
// go close timer
function mclosetime()
{
	closetimer = window.setTimeout(mclose, timeout);
}
// cancel close timer
function mcancelclosetime()
{
	if(closetimer)
	{
		window.clearTimeout(closetimer);
		closetimer = null;
		if(ddmenuparentimg != '') document.getElementById(ddmenuparentimg).src = document.getElementById(ddmenuparentimg).overImage.src;
	}
}
// close layer when click-out
document.onClick = mclose();