// JavaScript Document

function tabswitch(whichtab, whichcontent) {
	
	document.getElementById('cat_content_1').style.display = 'none';
	document.getElementById('cat_content_2').style.display = 'none';
	document.getElementById('cat_content_3').style.display = 'none';	
	document.getElementById(whichcontent).style.display = 'block';		

	document.getElementById('tab1').className = 'off';
	document.getElementById('tab2').className = 'off';
	document.getElementById('tab3').className = 'off';
	document.getElementById(whichtab).className = 'on';		


}