function swicthtab(btntab,detailtab,img){

document.getElementById("Tab1").src="images/worldcar02.jpg";
document.getElementById("Tab2").src="images/bigstory02.jpg";
document.getElementById("Tab3").src="images/carguru02.jpg";
document.getElementById("Tab4").src="images/insidecbu02.jpg";
document.getElementById("Tab5").src="images/showroom02.jpg";
btntab.src=img;

document.getElementById("dtab1").style.display="none";
document.getElementById("dtab2").style.display="none";
document.getElementById("dtab3").style.display="none";
document.getElementById("dtab4").style.display="none";
document.getElementById("dtab5").style.display="none";
document.getElementById(detailtab).style.display="block"; 
}

function swicthtab2(btntab,detailtab,img){
document.getElementById("Tab21").src="images/newzone02.jpg";
document.getElementById("Tab22").src="images/greenzone02.jpg";
document.getElementById("Tab23").src="images/socialzone02.jpg";
document.getElementById("Tab24").src="images/audiozone02.jpg";
document.getElementById("Tab25").src="images/testzone02.jpg";
document.getElementById("Tab26").src="images/navigation02.jpg";
btntab.src=img;

document.getElementById("Dtab21").style.display="none";
document.getElementById("Dtab22").style.display="none";
document.getElementById("Dtab23").style.display="none";
document.getElementById("Dtab24").style.display="none";
document.getElementById("Dtab25").style.display="none";
document.getElementById("Dtab26").style.display="none";
document.getElementById(detailtab).style.display="block"; 
}

function selectcopy(id){
document.getElementById("copy1").style.display="none";
document.getElementById("copy2").style.display="none";
document.getElementById("copy3").style.display="none";
document.getElementById("copy4").style.display="none";
document.getElementById("copy"+id).style.display="block";
}