function cssHelper ()
{
	var dissonance	= 20;
	var m_block		= document.getElementById('leftmenu_content');
	var c_block		= document.getElementById('content_block_content');
	var m_l_shadow	= document.getElementById('leftmenu_body_shadow');

	if (m_block.clientHeight > c_block.clientHeight)
	{
		if (document.all) m_l_shadow.style.height = m_l_shadow.parentNode.clientHeight - 19 + 'px';
		c_block.style.height = m_block.clientHeight - dissonance + 'px';
	}
	else
	{
		m_block.style.height = c_block.clientHeight - dissonance + 'px';
	}
}