function newImage(arg)
{
	if (document.images)
	{
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages()
{
	if (document.images && (preloadFlag == true))
	{
		for (var i=0; i<changeImages.arguments.length; i+=2)
		{
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}


var preloadFlag = false;

function preloadImages()
{
	if (document.images)
	{
		over_home	= newImage(/*URL*/'navi-menu/menu-s-1.gif');
		over_kankyo	= newImage(/*URL*/'navi-menu/menu-s-2.gif');
		over_kaisya	= newImage(/*URL*/'navi-menu/menu-s-3.gif');
		over_jigyo	= newImage(/*URL*/'navi-menu/menu-s-4.gif');
		over_saiyo	= newImage(/*URL*/'navi-menu/menu-s-5.gif');
		over_link	= newImage(/*URL*/'navi-menu/menu-s-6.gif');
		over_sitemap	= newImage(/*URL*/'navi-menu/menu-s-7.gif');
		over_sm_kaisya	= newImage(/*URL*/'navi-sm/sm-s-1.gif');
		over_sm_ir	= newImage(/*URL*/'navi-sm/sm-s-2.gif');
		over_sm_jigyo	= newImage(/*URL*/'navi-sm/sm-s-3.gif');
		over_sm_saiyo	= newImage(/*URL*/'navi-sm/sm-s-4.gif');
		over_hp1	= newImage(/*URL*/'navi-menu/caption-s-1.gif');
		over_kojin1	= newImage(/*URL*/'navi-menu/caption-s-2.gif');
		preloadFlag	= true;
	}
}