Iphone 3GS Wet?

I am disabled & got caught in a massive downpour & my iphone got slightly wet so i dried it well & placed it in a bag of rice sealed for a few days in a warm place. I have been able to charge it since & synce it to my computer but when i turn it on everything looks perfect but the slide to open will not work, the red slide to close works perfectly. Can you please help me fix this as i miss it so much.