function tabSwitch(new_tab, new_content) {    
    document.getElementById('filter_1').style.display = 'none';  
    document.getElementById('filter_2').style.display = 'none';  
    document.getElementById(new_content).style.display = 'block';     
      
    document.getElementById('tab_1').className = '';  
    document.getElementById('tab_2').className = '';  
    document.getElementById(new_tab).className = 'active';        
}

function toggleDiv(divID) {
	var state = document.getElementById(divID).style.display;
	
	if (state == 'none' || state == '') 
		document.getElementById(divID).style.display = 'block';
	else
		document.getElementById(divID).style.display = 'none';
}