var pic_wnd=null;

function open_win(file_path, name, width, height, scrollbar, resizable) {

	if (pic_wnd && !pic_wnd.closed) pic_wnd.close();
	//scrollbar='no';
	if (screen.availWidth>width) {
		var newx = (screen.availWidth-width)/2;
	} else {
		var newx = 0;
		width = screen.availWidth;
		scrollbar='yes';
	}
	if (screen.availHeight-40>height){
		var newy = (screen.availHeight-height)/2;
	} else {
		var newy=0;
		height = screen.availHeight-40;
		scrollbar='yes';
	}
	if (scrollbar==null) scrollbar='no';
	if (resizable==null) resizable = 'no';
	var options = 'width='+width+',height='+height + ',resizable='+resizable+', status=no' + ',scrollbars='+scrollbar;

	pic_wnd = window.open(file_path, 'Picture', options);

	pic_wnd.moveTo(newx, newy);
	pic_wnd.focus();
	return false;
}