CSS problems with float:right giving white borders in IE7

[FrostbiteXIII]

OK, Ive narrowed my problem down to the consecutive div tags with the following classes:

div.lvl4section_headerleft {	text-align: center;	clear: none;	float: left;	width: 30%;	vertical-align: middle;	padding: 0px;}div.lvl4section_headercentre {	text-align: center;	clear: none;	float: left;	width: 40%;	vertical-align: middle;	padding: 0px;}div.lvl4section_headerright {	text-align: right;	clear: none;	float: right;	width: 30%;	vertical-align: top;	padding: 0px;}

Can anyone tell me why IE7 is adding about 50% more white space to the right of my page (meaning I have to use a big left/right scroll bar on a 1280x1024 screen, when it is perfect in Firefox?(Im pretty sure) completely seperately, my background div tag doesnt force the background image to go to the bottom of the page - height: 100%; doesnt work - any other suggestions here?

div.lvl0section_normal {	margin: 0px;	padding: 20px;	background-color: #6699CC;	background-image: url(images/bgd.gif);	color: #000000;}

TIA!Bob

[croatiankid]

How the ###### should we know? The css by itself means absolutely nothing. Give us the COMPLETE HTML and CSS of the page. We're not psychic.