CSS Vertical Centre

display:table;


				display:table-cell;

				vertical-align:middle;

Everything in this table cell div is centred
It can dynamically change to any height based on content (try by changing your browser font size)
Doesn’t get cut off when there isn't enough room
Doesn’t work in Internet Explorer
Uses 2 extra divs

Any object, with relative positioning

positoin:absolute; top:50%; height:240px; margin-top:(negative half the height);


			float:left;

			height:50%;

			margin-bottom:-120px;

position:relative; clear:left; height:240px;

Any object, with relative positioning

top:0; bottom:0; left:0; right:0; position:absolute; margin:auto; height:something; width:something;

Single Line

line-height:10em; height:10em;