function fade(div_id) {
	if(div_id == 'divleft')
	{
		$('#divleft').fadeIn(800);
		$('#divright').fadeOut(800);
		$('#d2_info').fadeOut(800);
	} else if(div_id == 'divright')
	{
		$('#divright').fadeIn(800);
		$('#divleft').fadeOut(800);
		$('#d3_info').fadeOut(800);
	} else if(div_id == 'clear')
	{
		$('#divright').fadeOut(800);
		$('#divleft').fadeOut(800);
		$('#d2_page').fadeOut(800);
		$('#d3_page').fadeOut(800);
		$('#d2_info').fadeIn(800);
		$('#d3_info').fadeIn(800);
	} else if(div_id =='d2_page')
	{
		$('#d2_page').fadeIn(800);
		$('#divright').fadeOut(800);
		$('#divleft').fadeOut(800);
	} else if(div_id =='d3_page')
	{
		$('#d3_page').fadeIn(800);
		$('#divright').fadeOut(800);
		$('#divleft').fadeOut(800);
	}
}