function snavRoll (OorF,imName) {
	if (OorF == 'on') {
		document.images[imName].src = 'http://www.newcities.org/images/nav/mainnav_' + imName + '_roll.gif';
	}
	else {
		document.images[imName].src = 'http://www.newcities.org/images/nav/mainnav_' + imName + '.gif';
	}			
}

var win = null;
function NewWindow(mypage,myname,w,h,scroll){
LeftPosition = (screen.width) ? (screen.width-w)/2 : 0;
TopPosition = (screen.height) ? (screen.height-h)/2 : 0;
settings =
'height='+h+',width='+w+',top='+TopPosition+',menubar=0,left='+LeftPosition+',scrollbars=1'+scroll+',resizable'
win = window.open(mypage,myname,settings)
}