function show(getDirection){

if(getDirection=='A'){
document.getElementById('d1').className ='selecth';
document.getElementById('d2').className ='';
document.getElementById('d3').className ='';
document.getElementById('div1').style.display='block';
document.getElementById('div2').style.display='none';
document.getElementById('div3').style.display='none';


}

if(getDirection=='B'){
document.getElementById('d1').className ='';
document.getElementById('d2').className ='selecth';
document.getElementById('d3').className ='';
document.getElementById('div1').style.display='none';
document.getElementById('div2').style.display='block';
document.getElementById('div3').style.display='none';

}

if(getDirection=='C'){
document.getElementById('d1').className ='';
document.getElementById('d2').className ='';
document.getElementById('d3').className ='selecth';
document.getElementById('div1').style.display='none';
document.getElementById('div2').style.display='none';
document.getElementById('div3').style.display='block';

}






}