A few PHP/Javascript tweaks & fixes

I need some javascript tweaks done and some minor php/js debugging done. Here's a general description... I have auction software that allows an auction posted to have a set end date/time at a determined range. So 7 days would mean end date is 7 days form the exact posting time (hour and minutes too) I want it to end 7 days from then between 6 & 9pm. I'm also having some trouble troubleshooting a few problems with fields not appearing/dissapearing in some forms. I'm in a hurry so please don't bid if you're not able to work on this TODAY. I'm hoping to hire you and have these worked on right away and hopefully sorted out today...thanks! :)