function NewWindow(mypage, myname) {
	var w = '450';
	var h = '500';
	var winl = (screen.width - w) / 2;
	var wint = (screen.height - h) / 2;
	winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars=1'
	win = window.open(mypage, myname, winprops)
	if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); }
}

function HelpWindow(mypage, myname) {
	var w = '700';
	var h = '550';
	var winl = (screen.width - w) / 2;
	var wint = (screen.height - h) / 2;
	winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars=1'
	win = window.open(mypage, myname, winprops)
	if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); }
}

function roll_over(img_name, img_src) {
	document[img_name].src = img_src;
}

function tulostus()
{
	window.print();
	window.close();
}