Question

The code:

if(e.target.className.indexOf('box') !== -1)
  e.target.parentNode.className = 'boxW';

gets me this error in Internet Explorer 9:

SCRIPT5007: Unable to get value of the property ‘className’

Same thing happens for the parentNode property (if I remove the IF)…

Answer 1

I don’t know how it is with IE 9 but other version have used e.srcElement instead of e.target.

So maybe you can do it like this:

var real_target = e.target || e.srcElement;

if(real_target.className.indexOf('box') !== -1)
  real_target.parentNode.className = 'boxW';