function bg_color(id)
{

	document.getElementById(id).style.backgroundColor="#B0DEF9";//#A7B9C5";//#D1DADE";//#BFCBD0";//#9BAEB7";//#738E9B";//#ACBDC4";
	document.getElementById(id + "_a").className="subjectlink";
}

function bg_color_back(id)
{
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	if (subject_selected==id)
	{
		 document.getElementById(id + "_a").className="subjectlink_highlight";
		 document.getElementById(id).style.backgroundColor="#1488CD";//#869DA8";
	}
}

function LeftNavigationMenu()
{
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}