Allow to define font resize increments other then +1/-1

Increments of +1 / -1 are too small to notice.
It's better to have +2 / -2 increments to have a noticeable effect.
This also means the the default min and max options should be made to +5 and -1.

Let's allow to define font resize increments other then +1/-1.
For the meanwhile, here is a patch to fontsizer.js which defines the default increment to be 2, not 1. (you will have to set the min and max options accordingly -max +2 is too small).

37c37
<                 if(($.FontSizer.level) + 1 <= $.FontSizer.options.max) {            
---
>                 if(($.FontSizer.level) + 2 <= $.FontSizer.options.max) {            
40c40
<                         var next = (parseInt($.FontSizer.level) + 1);
---
>                         var next = (parseInt($.FontSizer.level) + 2);
46c46
<                 if(($.FontSizer.level - 1) >= $.FontSizer.options.min) {
---
>                 if(($.FontSizer.level - 2) >= $.FontSizer.options.min) {
49c49
<                         var next = (parseInt($.FontSizer.level) - 1);
---
>                         var next = (parseInt($.FontSizer.level) - 2);

Amnon
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