#div_left
{
	float:left;
	width:750px;
	margin-left:3px;
	height: 100%; 
}

#div_right
{	
	float:left;
	width:230px;
	margin-left:10px;
	height: 100%; 
}

.div_left_up
{
	width:100%;
}

.div_left_middle
{
	width:100%;
}

.div_left_down
{
	width:100%;
}

.div_left_middle_left
{
	float:left;
	width:230px;
}

.div_left_middle_right
{
	margin-left:5px;
	float:left;
	width:515px;
}

.div_left_up_left
{
	width:230px;
	float:left;
}

.div_left_up_right
{
	margin-left:5px;
	width:400px;
	float:left;
}