function showOne() {
	document.getElementById('tab-one').style.background = 'url("http://grfx.cstv.com/schools/depa/graphics/depa-10-tabs-on.png")';
	document.getElementById('tab-two').style.background = 'url("http://grfx.cstv.com/schools/depa/graphics/depa-10-tabs-off.png")';
	document.getElementById('tab-three').style.background = 'url("http://grfx.cstv.com/schools/depa/graphics/depa-10-tabs-off.png")';
	document.getElementById('tabs-bg-one').style.display = 'block';
	document.getElementById('tabs-bg-two').style.display = 'none';
	document.getElementById('tabs-bg-three').style.display = 'none';
	document.getElementById('tabs-wrap-one').style.display = 'block';
	document.getElementById('tabs-wrap-two').style.display = 'none';
	document.getElementById('tabs-wrap-three').style.display = 'none';
}

function showTwo() {
	document.getElementById('tab-one').style.background = 'url("http://grfx.cstv.com/schools/depa/graphics/depa-10-tabs-off.png")';
	document.getElementById('tab-two').style.background = 'url("http://grfx.cstv.com/schools/depa/graphics/depa-10-tabs-on.png")';
	document.getElementById('tab-three').style.background = 'url("http://grfx.cstv.com/schools/depa/graphics/depa-10-tabs-off.png")';
	document.getElementById('tabs-bg-one').style.display = 'none';
	document.getElementById('tabs-bg-two').style.display = 'block';
	document.getElementById('tabs-bg-three').style.display = 'none';
	document.getElementById('tabs-wrap-one').style.display = 'none';
	document.getElementById('tabs-wrap-two').style.display = 'block';
	document.getElementById('tabs-wrap-three').style.display = 'none';
}

function showThree() {
	document.getElementById('tab-one').style.background = 'url("http://grfx.cstv.com/schools/depa/graphics/depa-10-tabs-off.png")';
	document.getElementById('tab-two').style.background = 'url("http://grfx.cstv.com/schools/depa/graphics/depa-10-tabs-off.png")';
	document.getElementById('tab-three').style.background = 'url("http://grfx.cstv.com/schools/depa/graphics/depa-10-tabs-on.png")';
	document.getElementById('tabs-bg-one').style.display = 'none';
	document.getElementById('tabs-bg-two').style.display = 'none';
	document.getElementById('tabs-bg-three').style.display = 'block';
	document.getElementById('tabs-wrap-one').style.display = 'none';
	document.getElementById('tabs-wrap-two').style.display = 'none';
	document.getElementById('tabs-wrap-three').style.display = 'block';
}