Font size adjustment plugin for PhoneGap on Android: a simple PhoneGap plugin that allows you to dynamically modify the WebView's textSize property in order to make the text larger/smaller.
Usage:
// increase the font size by one unit (units are [50%,75%,100%,150%,200%])
window.plugins.fontSizeAdjust.increase(myCallback(newFontSizeAsPercent){});
// decrease the font size by one unit
window.plugins.fontSizeAdjust.decrease(myCallback(newFontSizeAsPercent){});