option "toggleArrows" should support theme's custom position

[Krinkle]

In a theme of mine I've got:

div.anythingSlider-Foo .forward {
    right: -70px;
}
div.anythingSlider-Foo .back {
    left: -70px;
}

However the following code from jquery.anythingslider.js lines 646/647:

base.$forward.stop(true,true).delay(t1).animate({ right: sign * base.$arrowWidth, opacity: op }, o.animationTime/2);
base.$back.stop(true,true).delay(t1).animate({ left: sign * base.$arrowWidth, opacity: op }, o.animationTime/2);

Which animate to 0 or (arrowWidth) respectively, only supporting the default theme's "left: 0" and "right: 0" on .forward and .backward elements.

[Mottie]

Thank you for reporting and sharing a fix for this issue... I'll look into adding it soon. It's been a crazy day!

[Mottie]

I ended up not merging your pull because I realized that I misnamed base.$arrowWidth. The convention that I've been using is that any variable with a $ is a jQuery object. Also, I've updated the minified version.

Thanks for sharing! I've included the fix in version 1.7.24.