// JavaScript Document
ii=19
ll=ii-2

start=19
end=72
speed=15

function t(){
document.getElementById("arrow").src="../assets/langarrow_up.gif";
document.getElementById("a").style.height=ii + "px";
document.getElementById("b").style.height=ll + "px";
if (ii<=end) { ii=ii+1; ll=ll+1; var t=setTimeout("t()",speed); }
}
function v(){
document.getElementById("arrow").src="../assets/langarrow.gif";
document.getElementById("a").style.height=ii + "px";
document.getElementById("b").style.height=ll + "px";
if (ii>start) { ii=ii-1; ll=ll-1; var t=setTimeout("v()",speed); }
}