.content_main {
width: 654px;
height: 600px;
background-color: #FFFFFF;
float: left;
padding-left: 7px;
padding-right: 7px;
padding-bottom: 6px;
font-size: 11px;
font-family: Arial, Helvetica, sans-serif;
}
dat is de bijhorende css als ik me niet vergis vervang height: 600px; (dat gaat altijd fout als je scherm hoogte meer als 600px is) is door height:100%
<div id="column1">
<div id="navcol">
<h4>Nav Column</h4>
<ul>
<li>Let me not to the marriage of true minds</li>
<li>Admit impediments; love is not love</li>
<li>Which alters when it alteration finds</li>
<li>Or bends with the remover to remove</li>
<li>Oh, no, it is an ever fixed mark</li>
<li>Let me not to the marriage of true minds</li>
</ul>
</div>
<div id="sidecol">
<h4>Starboard Side Column</h4>
<ul>
<li>Let me not to the marriage of true minds</li>
<li>Admit impediments; love is not love</li>
<li>Which alters when it alteration finds</li>
<li>Or bends with the remover to remove</li>
</ul>
</div>
<div id="main">
<h2>Main Content</h2>
<p> That looks on tempests and is never shaken; or bends with the remover to remove. It is the star to every wand'ring bark, but bears it out even to the edge of doom. If this be error and upon me proved, let me not to the marriage of true minds admit impediments; love is not love. Whose worth's unknown, although his height be taken.</p>
<p>That looks on tempests and is never shaken; love alters not with his brief hours and weeks, which alters when it alteration finds. Or bends with the remover to remove. Admit impediments; love is not love whose worth's unknown, although his height be taken.It is the star to every wand'ring bark, that looks on tempests and is never shaken; love alters not with his brief hours and weeks. Which alters when it alteration finds, but bears it out even to the edge of doom. Love's not time's fool, though rosy lips and cheeks oh, no, it is an ever fixed mark admit impediments; love is not love. Let me not to the marriage of true minds love alters not with his brief hours and weeks, whose worth's unknown, although his height be taken.</p>
<p>If this be error and upon me proved, within his bending sickle's compass come; which alters when it alteration finds. Oh, no, it is an ever fixed mark that looks on tempests and is never shaken; admit impediments; love is not love. It is the star to every wand'ring bark, within his bending sickle's compass come; but bears it out even to the edge of doom. Whose worth's unknown, although his height be taken.</p>
<p>That looks on tempests and is never shaken; I never writ, nor no man ever loved. Oh, no, it is an ever fixed mark it is the star to every wand'ring bark, let me not to the marriage of true minds. If this be error and upon me proved, or bends with the remover to remove.</p>
</div>
<div class="clear"> </div>
</div>
Ik heb het nu met een achtergrond afbeelding, alleen ik krijg die niet helemaal op de achtergrond, de div met die image heeft x-index: 1; en de rest allemaal z-index: 2;