See the symbol SMEV in middle of the link? All you have to do is change that to whatever symbol you want, paste it into your browser's address field, and you have a 2 month daily chart.
See where it says yr or mn or dy? That's year, month, or day. Right now, you can see mn=2 and the others are 0. That's why you see the 2 month chart. I can change the 2 to a 3 and get a 3 month chart.
Hope this helps. I'll try to post something soon on gaps.