* html #main_content 
{
	height:400px;
}

* html #main_content_left 
{
	height:400px;
}

* html #main_content_right 
{
	height:400px;
}

* html .before_and_after
{
	height:150px;
}

* html .before
{
	height:150px;
}

* html .after
{
	height:150px;
}

* html .main_content_double_side
{
	height:200px;
}

* html .main_content_double_left
{
	height:150px;
}

* html .main_content_double_right
{
	height:150px;
}