function show1div()
{
show1.style.display="";
show2.style.display="none";
show3.style.display="none";
show5.style.display="none";
menu1.style.background="#7AB5DF";
menu2.style.background="#B5DEF2";
menu3.style.background="#B5DEF2";
menu5.style.background="#B5DEF2";
}

function show2div()
{
show1.style.display="none";
show2.style.display="";
show3.style.display="none";
show5.style.display="none";
menu1.style.background="#B5DEF2";
menu2.style.background="#7AB5DF";
menu3.style.background="#B5DEF2";
menu5.style.background="#B5DEF2";
}

function show3div()
{
show1.style.display="none";
show2.style.display="none";
show3.style.display="";
show5.style.display="none";
menu1.style.background="#B5DEF2";
menu2.style.background="#B5DEF2";
menu3.style.background="#7AB5DF";
menu5.style.background="#B5DEF2";
}

function show4div()
{
show1.style.display="none";
show2.style.display="none";
show3.style.display="none";
show5.style.display="none";
menu1.style.background="#B5DEF2";
menu2.style.background="#B5DEF2";
menu3.style.background="#B5DEF2";
menu5.style.background="#B5DEF2";
}

function show5div()
{
show1.style.display="none";
show2.style.display="none";
show3.style.display="none";
show5.style.display="";
menu1.style.background="#B5DEF2";
menu2.style.background="#B5DEF2";
menu3.style.background="#B5DEF2";
menu5.style.background="#7AB5DF";
}