#outerColumnContainer
{
	/* primary content container 	*  fat left and right columns that the sidebars sit inside 	*  (we can use border-color of outerColumnContainer to set 	*  bsckground colour of the side nav) */
	border-left-style: solid;
	border-right-style: solid;
	border-left-width: 12em;
	border-right-width: 130px;
}

#middleColumn
{
	float: right;
	margin: 0 0 0 -1px;
	width: 100%;
	z-index: 5;
}

#middleColumn .inside
{
	padding-left: 10px; /* gutter to left of middle column*/
}

#leftColumn
{
	float: left;
	margin: 0 1px 0 -12em;
	width: 12em; /* must match left border width of outerColumnContainer */
	z-index: 4;
}

#leftColumn .inside 
{
	padding-left: 8px;
}

#rightColumn
{
	float: right;
	width: 130px; /* must match right border width of outerColumnContainer */
	margin: 0 -130px 0 1px;
	z-index: 2;
}

#rightColumn .inside
{
	padding-left: 8px; /* gutter to left of right column*/
	border-left-style: solid;
	border-left-width: 2px; /* border to left of right column */
	padding-right: 0;
}