Approach To Web Servers Load Balancing

Hi everyone, I want to deploy my Yii application in two web servers. I just got an idea: resolve load balancing through the links. I want to know what do you think about this.

I will configure two web servers:

Web server 1 with two domains: www.mydomain.com and ws1.mydomain.com
Web server 2 with one domain: ws1.midominio.com

Then, if a page contains five links, their URLs will be, for example:

http://ws1.mydomain.com/index.php
http://ws2.mydomain.com/index.php
http://ws1.mydomain.com/index.php
http://ws2.mydomain.com/index.php
http://ws1.mydomain.com/index.php

I was wondering if this solution may has any problem. Tecnically, I don't see any problem (yet), but maybe with search engines. What do you think?

Thanks!!