Is there an HTML code that...

I am fairly new to the HTML world and I was wondering if there is a code that forces a website to convert itself to the viewers screening resolustion. For example I originally made my website to fit a 800*600 resolution, i recently changed my screening resolution and now it looks all goofy, if u have a larger screening resolution then 800*600 you can go to www.anarchyofsouls.com to see what I mean when i say it looks goofy. So is there any way to make it fit both an 800*600 and 1280*1024? I hope I didn't confuse any of you too much :)

Don't use fixed sizes, use percentages. So if you have a table which is 600 pixels wide (<table width="600">) and you're wanting it to cover most the screen, change it to something like <table width="90%">. Also center align the page, it won't look as bad then

Thank you so much! :)