I am creating a website with three coloums. I have set the height to AUTO in CSS. but when i reach a spefic height it goes over it and it wont expand the div tag. I have tried setting the css to 100% and this wont even help. Please could yu help?

body {
	margin-left: 0px;
	margin-top: 0px;
	background-image: url(images/bg.gif);
	background-repeat: repeat;
}
.hdr2 {
	font-family: Arial, Helvetica, sans-serif;
	font-size: 18px;
	font-weight: bold;
	color: #666666;
	text-decoration: underline;
}
.hdr3 {
	font-family: Verdana, Arial, Helvetica, sans-serif;
	font-size: 14px;
	font-weight: bold;
	color: #666666;
	text-decoration: underline;
	height: 25px;
}
.hdr4 {
	font-family: Verdana, Arial, Helvetica, sans-serif;
	font-size: 12px;
	font-weight: bold;
	color: #666666;
	text-decoration: underline;
	height: 20px;
}
.hdr1 {
	font-family: Arial, Helvetica, sans-serif;
	font-size: 24px;
	font-weight: bold;
	color: #666666;
	text-decoration: underline;
}

#container {
	font-family: Verdana, Arial, Helvetica, sans-serif;
	font-size: 12px;
	font-style: normal;
	color: #000000;
	height: auto;
	width: 850px;
	margin-right: auto;
	margin-left: auto;
	background-color: #000000;
	border-right-width: 1px;
	border-bottom-width: 1px;
	border-left-width: 1px;
	border-right-style: solid;
	border-bottom-style: solid;
	border-left-style: solid;
	border-right-color: #000000;
	border-bottom-color: #000000;
	border-left-color: #000000;
}


#flash-container-header {
	background-color: #000000;
	height: 8px;
	width: 850px;
}

#top-header-container {
	background-color: #000000;
	height: 140px;
	width: 850px;
	margin-right: auto;
	margin-left: auto;
}
#logo {
	height: 140px;
	width: 850px;
}
#menu-container {
	height: 30px;
	width: 850px;
	background-color: #000000;
	margin-top: 10px;
}

#button-container {
	height: 30px;
	width: 850px;
	margin-right: auto;
	margin-left: auto;
}
#home-flash-banner-container {
	height: 200px;
	width: 850px;
}
#main-flash-container {
	float: left;
	height: 200px;
	width: 650px;
}
#forex-container {
	float: left;
	height: 200px;
	width: 200px;
}
#forex-box {
	height: 180px;
	width: 180px;
	margin-top: 5px;
	margin-right: auto;
	margin-left: auto;
}
#index-body-container {
	background-color: #FFFFFF;
	height: 100%;
	width: 850px;
}
#index-box {
	min-height:200px;
	width: 830px;
	margin-top: 10px;
	margin-right: auto;
	margin-bottom: 10px;
	margin-left: auto;
	height: auto;
}

#index-box-left {
	margin: 10px;
	float: left;
	height: auto;
	width: 580px;
	min-height:200px;
}
#index-box-right {
	margin: 10px;
	float: left;
	height: auto;
	width: 210px;
	min-height:200px;
}
#footer-container {
	height: 240px;
	width: 850px;
	margin-top: 10px;
}
#footer-box {
	height: 150px;
	width: 820px;
	margin-top: 15px;
	margin-right: auto;
	margin-left: auto;
	background-color: #FFFFFF;
}

/*  footer menu  */
.box {
	display: inline;
	float: left;
	height: 120px;
	width: 160px;
	margin-top: 10px;
	margin-right: 10px;
	margin-bottom: 10px;
	margin-left: 11px;
	padding-top: 5px;
	padding-right: 10px;
	padding-bottom: 5px;
	padding-left: 10px;
}
span.grey {
	color: #999999;
	font-weight:normal;
	font-size: 9px;
	font-family: Verdana, Arial, Helvetica, sans-serif;
}
.footer-text {
	height: 12px;
	width: 160px;
	padding-top: 3px;
	padding-bottom: 3px;
	font-family: Verdana, Arial, Helvetica, sans-serif;
	font-size: 10px;
	color: #999999;
}
#footer-notes {
	height: 70px;
	width: 820px;
	margin-right: auto;
	margin-left: auto;
	background-color: #FFFFFF;
	text-align: center;
	font-family: Verdana, Arial, Helvetica, sans-serif;
	font-size: 9px;
	color: #999999;
}

#structure-container {
	height: auto;
	width: 830px;
	background-color: #FFCC99;
}
#left-structure {
	float: left;
	height: auto;
	width: 180px;
}
#main-structure {
	display: inline;
	float: left;
	height: auto;
	width: 470px;
}
#right-structure {
	display: inline;
	float: left;
	height: auto;
	width: 170px;
}
#games-menu-container {
	height: auto;
	width: 160px;
	padding-right: 10px;
	padding-left: 10px;
	padding-top: 15px;
}
#games-left-banners {
	height: 400px;
	width: 160px;
	margin-top: 25px;
	padding-right: 10px;
	padding-bottom: 30px;
	padding-left: 10px;
}

#main-stucture-box {
	height: auto;
	width: 450px;
	padding-top: 15px;
	padding-right: 10px;
	padding-bottom: 15px;
	padding-left: 10px;
}
.GamesTitle {
	font-family: Verdana, Arial, Helvetica, sans-serif;
	font-size: 30px;
}
.gamesSubTitle {
	font-family: Verdana, Arial, Helvetica, sans-serif;
	font-size: 16px;
}

Need your HTML code as well, but I can suggest that you add a position:relative; to your #container. By the way, you've got way too many ambiguous pronouns in your explanation.
"it goes over it and it wont expand the div tag".
Not sure who is "it". ?:|

please give your html page code we can solve your problem

without looking at the css,
zero should have no dimension $0 = 0px = 0 apples = 0em = 0% = 0
zero, as 0(dimension), throws everything into quirks mode, quirks mode causes unreasonable failures
examine your css to find any 0px 0em 0% 0pt and change them to just 0
what is the "specific height" at which failure occurs

**edit
had a look, there are a few, may not be the cause, but removing unpredicatables helps