Position absolute in ie7 problems

Im having a bit of trouble with ie7(who hasnt)

I want the slide thats currently below the 3 content divs to be visible, and the content to start at the bottom of the slider. as it is in the other browsers and verions. but i cannot get it to work in internet explorer 7... its like it doesnt know the height of the element, t开发者_如何学运维his works in every other major browser though including ie 8, 9

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you have define the position absolute cordinates

like this

#Slider {
    left: 0;
    position: absolute;
    top: 210px;
}