function go(){
	var urlset = document.getElementById('select_sub').value;
	window.location= urlset; 
	
}


function footer_close(){
    
    var elem1 = document.getElementById("blok_lft");
    var elem2 = document.getElementById("cl_op");
    
    elem1.style.display='none';
    elem2.innerHTML = '<a href="javascript:footer_open()">Voor meer informatie klik hier <img  src="/images/arrow_down.png" alt="pijlen omlaag" /></a>';
    
}

function footer_open(){
    var elem1 = document.getElementById("blok_lft");
    var elem2 = document.getElementById("cl_op");
    
    elem1.style.display='block';
    elem2.innerHTML = ' <a href="javascript:footer_close()">Klik hier om te sluiten <img id="cl_op_img" src="/images/arrow_up.png" alt="pijlen omhoog" /></a>';
    
}