function toggleColour(szDivID, iState) // 1 visible, 0 hidden
{
    //alert('togglediv = ' + szDivID);
    if(document.layers)	   //NN4+
    {
	document.layers[szDivID].bgColor = iState ? "#1a1a1a" : "#000000";
    }
    else if(document.getElementById)	  //gecko(NN6) + IE 5+
    {
        var obj = document.getElementById(szDivID);
        obj.style.backgroundColor  = iState ? "#1a1a1a" : "#000000";
    }
    else if(document.all)	// IE 4
    {
        document.all[szDivID].style.backgroundColor = iState ? "#1a1a1a" : "#000000";
    }
}