Conditional statement for photo slider - javascript

I am making a photo slider. If you click the previous or next button, the margin-left keeps adding or subtracting a variable, which is set to 5px. However, I want to limit the distance the slider goes left or right, so that it doesn't slide so far that there is white space.
To limit the boundary, there is a conditional statement that assigns the variable a value of 5px if the margin-left is between 10px and -100px. Otherwise, the variable is set to 0px.
And this does work. If you go too far to the left or right, the slider just stops. But once the boundary is met, the previous and next buttons do not work. Any tips?
You can view my code here:
jsfiddle.net/xpfbh/2/

I have updated your fiddle. I had to change your if condition to include the margin range as well as the direction. Also removed the test variable and moved the statement which sets the margin within the if block. I didn't think the else block was needed, so I removed it as well.

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I am trying to do something similar this guy did here
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Now since all divs are actually positioned inline i have tried to specify direction: rtl on the parent div, but it still does not work. (my view remains on the left side on the page, I would like to see the rightmost div first and then when I slide the left divs they move to the right).
Thank you.
L.E: Here is the solution for those interested http://jsfiddle.net/oq4p28wg/
From moving left to right in the example referenced they add margin-left to move between slides, until reaching a maximum number of slides. In your case to move in the opposite direction you will need to start with the maximum margin-left and substract margin to move from right to left in the slides until reaching the first slide and therefore margin-left:0.

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Inside that div I have some info (like the date, and a note counter) And I have three buttons.
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Are you referring to the fact that when you mouse over it, it expands, then slightly retracts? If so try adding the min-height property set to the size of the icons to the .notes element and it seems to prevent this jittering.
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The reason why it jitters is because since the elements inside are set to float, the height of the parent element is not affected, therefor the animation treats it as if it's empty. But setting a min-height or just height compensates for that. I'm sure it's more complicated than that but that's what's going on in a nutshell.

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I've updated your fiddle with a working solution. A few tips:
Move your CSS into a <style> element instead of writing it inline. That avoids typos like <div style="min-height:450px"; style="min-width:600px"> (two separate style attributes and an erroneous comma).
Use margin: 0 auto; to center block-level elements.
Your <rect> element was a different width than its containing <svg> element, so that was making it behave strangely.
I also colored the main <div> red just to make it easier to see what's going on.

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