onclick fontsize implementation

[aech_jedi]

Hello all and thank you in advance. I am very unfamiliar with Java and hope someone can help. I have a site using a wordpress theme and want to add the +, -, and reset buttons to control the text size. I am using this site http://www.dyn-web.com/code/fontsize...n.php#examples as my tutorial and am finding out that this is not a step by step buy requires prior knowledge for java coding.


For step one I copied the 3 lines of code and placed them in the header. Then for step 2 I placed them in the single post editor (not sure if the link "#" needs to be changed. And for step 3 I am lost completely. I downloaded the file linked on that page which includes 4 .js files, which I am not even sure if I will need.

Is this something anyone here can help me with?

I am familiar with html and css, and very little php coding, but this is confusing. Thanks.

[PeejAvery]

First off, this is not Java...it is JavaScript. They are two totally separate languages. Many people make this mistake.

As for the implementation, I suggest a much simpler approach!