function popWindow(mypage, myname, w, h, scroll) {
	//var top_position = (screen.height - h) / 2;
	var left_position = (screen.width  - w) / 2;
	windowProperties = 'height='+h+',width='+w+',top=10,left='+left_position+',scrollbars='+scroll+',resizable'
	win = window.open(mypage, myname, windowProperties)
}

function popWindowChrome(mypage, myname, w, h) {
	//var top_position = (screen.height - h) / 2;
	var left_position = (screen.width  - w) / 2;
	windowProperties = 'height='+h+',width='+w+',top=10,left='+left_position+',scrollbars=yes,resizable,location=yes,menubar=yes,toolbar=yes'
	win = window.open(mypage, myname, windowProperties)
}