var x2=0;

function  changer1(tr2, rr2,mnu,imag1,imag2){
mn = document.getElementById(mnu);
if (rr2==1){tr2.src=imag2;  mn.style.visibility='visible';
if(x2!=0 && x2!=tr2){x2.src=ig1; mn2.style.visibility='hidden';}}

if (rr2==0 && x2==0){tr2.src=imag1; mn.style.visibility='hidden';}
else {if (rr2==0 && x2!=tr2){x2.src=ig2;tr2.src=imag1; mn.style.visibility='hidden';mn2.style.visibility='visible';
if(rr2==0 && x2==tr2){x2.src=imag2; mn2.style.visibility='visible';}}}

if(rr2==2){if(x2==tr2){x2.src=imag2;} x2=tr2; mn2=mn; ig1=imag1; ig2=imag2;}

if (rr2==3 && x2!=0){x2.src=imag2; mn2.style.visibility='hidden';}
}

function Visibility(id) {
 id.style.visibility='hidden';

}