#div1{
    height: 1500px;
    width: 100%;
    background: lightgreen;
    -moz-box-shadow: 0px 4px 8px #000000;
    -webkit-box-shadow: 0px 4px 8px #000000;
    box-shadow: 0px 4px 8px #000000;
}
#nav{
    height: 100px;
    width: 100%;
    background: lightblue;
    -moz-box-shadow: 0px 4px 8px #000000;
    -webkit-box-shadow: 0px 4px 8px #000000;
    box-shadow: 0px 4px 8px #000000; 
}
#nextShow{
    height: 100px;
    width: 500px;
    background: orange;
    float: right;
}
#div5{
    height: 100px;
    width: 100%;
}
#div2{
    height: 1200px;
    width: 100%;
    background: lightpink;
    -moz-box-shadow: 0px 2px 8px #000000;
    -webkit-box-shadow: 0px 2px 8px #000000;
    box-shadow: 0px 2px 8px #000000;
    position: absolute;
    z-index: 9;
}
#diva4Wrapper{
    width: 75%;
    height: 600px;
    margin: 0 auto;
}
#div4{
    height: 600px;
    width: 75%;
    background: lightsalmon;
    -moz-box-shadow: 0px 4px 8px #000000;
    -webkit-box-shadow: 0px 4px 8px #000000;
    box-shadow: 0px 4px 8px #000000;
    position: absolute;
    z-index: 10;
}