var clicked_dd = 0;

document.getElementById("s5_drop_down2").style.height = document.getElementById("s5_drop_down").offsetHeight + "px";

function tab() {

if (clicked_dd == 0) {

open_dd();

document.getElementById("s5_open").style.visibility = 'hidden';
document.getElementById("s5_open").style.height = 0 + 'px';
document.getElementById("s5_open").style.display = 'none';
document.getElementById("s5_closed").style.visibility = 'visible';
document.getElementById("s5_closed").style.display = 'block';

}

else {

close_dd();

document.getElementById("s5_closed").style.visibility = 'hidden';
document.getElementById("s5_closed").style.height = 0 + 'px';
document.getElementById("s5_closed").style.display = 'none';
document.getElementById("s5_open").style.visibility = 'visible';
document.getElementById("s5_open").style.display = 'block';

}

}


function open_dd() {

window.setTimeout('increase()',1);

}


function increase() {

if (dd_top < (user_speed + 1)*-1) {

dd_top = dd_top + user_speed;
tab_top = tab_top + user_speed;

document.getElementById("s5_drop_down").style.top = (dd_top) +'px';
document.getElementById("s5_drop_down2").style.top = (dd_top) +'px';
document.getElementById("s5_drop_down_tab").style.top = (tab_top) +'px';


open_dd();

}

else {

document.getElementById("s5_drop_down").style.top = 0 +'px';
document.getElementById("s5_drop_down2").style.top = 0 +'px';
document.getElementById("s5_drop_down_tab").style.top = tab_set -1 +'px';
clicked_dd = 1;

}

}

function close_dd() {

window.setTimeout('decrease()',1);

}


function decrease() {

if (dd_top > (document.getElementById("s5_drop_down").offsetHeight * -1) + 56) {

document.getElementById("s5_drop_down").style.top = (dd_top) +'px';
document.getElementById("s5_drop_down2").style.top = (dd_top) +'px';
document.getElementById("s5_drop_down_tab").style.top = (tab_top) +'px';
dd_top = dd_top - user_speed;
tab_top = tab_top - user_speed;

close_dd();

}

else {

document.getElementById("s5_drop_down").style.top = ((document.getElementById("s5_drop_down").offsetHeight * -1) + 50) +'px';
document.getElementById("s5_drop_down2").style.top = ((document.getElementById("s5_drop_down").offsetHeight * -1) + 50) +'px';
document.getElementById("s5_drop_down_tab").style.top = 56 + 'px';
clicked_dd = 0;

}

}