function showSidebar() {
	document.getElementById('tab-calendar').style.background = 'url("http://grfx.cstv.com/schools/csfu/graphics/csfu-09-tabs-off.gif")';
	document.getElementById('tab-headlines').style.background = 'url("http://grfx.cstv.com/schools/csfu/graphics/csfu-09-tabs-off.gif")';
	document.getElementById('tab-sidebar').style.background = 'url("http://grfx.cstv.com/schools/csfu/graphics/csfu-09-tabs-on.gif")';
	document.getElementById('tabs-bg-calendar').style.display = 'none';
	document.getElementById('tabs-wrap-calendar').style.display = 'none';
	document.getElementById('tabs-bg-headlines').style.display = 'none';
	document.getElementById('tabs-wrap-headlines').style.display = 'none';
	document.getElementById('tabs-bg-sidebar').style.display = 'block';
	document.getElementById('tabs-wrap-sidebar').style.display = 'block';
}

function showCalendar() {
	document.getElementById('tab-calendar').style.background = 'url("http://grfx.cstv.com/schools/csfu/graphics/csfu-09-tabs-on.gif")';
	document.getElementById('tab-headlines').style.background = 'url("http://grfx.cstv.com/schools/csfu/graphics/csfu-09-tabs-off.gif")';
	document.getElementById('tab-sidebar').style.background = 'url("http://grfx.cstv.com/schools/csfu/graphics/csfu-09-tabs-off.gif")';
	document.getElementById('tabs-bg-calendar').style.display = 'block';
	document.getElementById('tabs-wrap-calendar').style.display = 'block';
	document.getElementById('tabs-bg-headlines').style.display = 'none';
	document.getElementById('tabs-wrap-headlines').style.display = 'none';
	document.getElementById('tabs-bg-sidebar').style.display = 'none';
	document.getElementById('tabs-wrap-sidebar').style.display = 'none';
}

function showHeadlines() {
	document.getElementById('tab-calendar').style.background = 'url("http://grfx.cstv.com/schools/csfu/graphics/csfu-09-tabs-off.gif")';
	document.getElementById('tab-headlines').style.background = 'url("http://grfx.cstv.com/schools/csfu/graphics/csfu-09-tabs-on.gif")';
	document.getElementById('tab-sidebar').style.background = 'url("http://grfx.cstv.com/schools/csfu/graphics/csfu-09-tabs-off.gif")';
	document.getElementById('tabs-bg-calendar').style.display = 'none';
	document.getElementById('tabs-wrap-calendar').style.display = 'none';
	document.getElementById('tabs-bg-headlines').style.display = 'block';
	document.getElementById('tabs-wrap-headlines').style.display = 'block';
	document.getElementById('tabs-bg-sidebar').style.display = 'none';
	document.getElementById('tabs-wrap-sidebar').style.display = 'none';
}