//	function: swop the hidden class
//	-----------------------------------------------------------------
	function set_display(objid, display) {
		var o = document.getElementById(objid);
		var c = o.className;
		if (c.indexOf('hidden') >= 0) {
			o.className = c.replace(/hidden/g, display);
		} else {
			o.className = c + ' ' + display;
		}
		return true;
	}
	
//	function: focus rotation
//	-----------------------------------------------------------------
	function focus_rotation(day) {
		switch (day) {
			case 1	:
			case 2	:
			case 3	:
			case 4	:
			case 5	:
			case 6	:
			case 7	:
			case 8	:	// 1st week
						set_display('focus_blank', 'hidden');
						set_display('focus_mining', '');
						set_display('focus_construction', 'hidden');
						set_display('focus_maritime', 'hidden');
						set_display('focus_government', 'hidden');
						break;
			case 9	:
			case 10	:
			case 11	:
			case 12	:
			case 13	:
			case 14	:
			case 15	:
			case 16	:	// 2st week
						set_display('focus_blank', 'hidden');
						set_display('focus_mining', 'hidden');
						set_display('focus_construction', '');
						set_display('focus_maritime', 'hidden');
						set_display('focus_government', 'hidden');
						break;
			case 17	:
			case 18	:
			case 19	:
			case 20	:
			case 21	:
			case 22	:
			case 23	:
			case 24	:	// 1st week
						set_display('focus_blank', 'hidden');
						set_display('focus_mining', 'hidden');
						set_display('focus_construction', 'hidden');
						set_display('focus_maritime', '');
						set_display('focus_government', 'hidden');
						break;
			case 25	:
			case 26	:
			case 27	:
			case 28	:
			case 29	:
			case 30	:
			case 31	:	// 1st week
						set_display('focus_blank', 'hidden');
						set_display('focus_mining', 'hidden');
						set_display('focus_construction', 'hidden');
						set_display('focus_maritime', 'hidden');
						set_display('focus_government', '');
						break;

		}
	}
	
	var today = new Date();
	var day = today.getDate();

	focus_rotation(day);