onclick fontsize implementation

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 even a little php coding, but this is confusing. Thanks.

Your question appears to be about Javascript. This is a Java forum - they are quite different languages, so you may get a better response in the scripting forum.

The only way to learn a new programming language is by writing programs in it...
B. Kernighan & D. Ritchie

ahh, further proving my newbness. Thank you!