function showsection(s) {

	div = document.getElementById('section' + s);

	if (div.style.display != 'block') {

		div.style.display = 'block'; 	
	} else { 
	
		div.style.display = 'none';
	}	
}




function close_nav() {
		
	for (var i=1; i<=12; i++) {
		div2 = document.getElementById('section' + i);
		if (div2) div2.style.display = 'none';
		else break;	
	}	
}


function changeArrow(x) {

    e = document.getElementById(x).src;
  //  console.log(e);
    if(e.indexOf("images/arrow_down.gif") > -1) {

        document.getElementById(x).src="images/arrow_right.gif";
    }

    if(e.indexOf("images/arrow_right.gif") > -1) {

        document.getElementById(x).src="/images/arrow_down.gif";
    }

}