var n=0;
function nxt()
{
n=n+1;


if(n==1)
{
document.getElementById("form1").style.visibility="hidden";
document.getElementById("form2").style.visibility="visible";
document.getElementById("form1").style.display="none";
document.getElementById("form2").style.display="block";
return false;
}
	



if(n==2)
{
document.getElementById("form2").style.visibility="hidden";
document.getElementById("form3").style.visibility="visible";
document.getElementById("form2").style.display="none";
document.getElementById("form3").style.display="block";

return false;
}
	
	

if(n==3)
{
document.getElementById("form3").style.visibility="hidden";
document.getElementById("form4").style.visibility="visible";
document.getElementById("form3").style.display="none";
document.getElementById("form4").style.display="block";
return false;
}
	
	

if(n==4)
{
document.getElementById("form4").style.visibility="hidden";;	
document.getElementById("form5").style.visibility="visible";
document.getElementById("form4").style.display="none";
document.getElementById("form5").style.display="block";
return false;
}


if(n==5)
{
document.getElementById("form5").style.visibility="hidden";
document.getElementById("form6").style.visibility="visible";
document.getElementById("form5").style.display="none";
document.getElementById("form6").style.display="block";
return false;
}



if(n==6)
{
document.getElementById("form6").style.visibility="hidden";	
document.getElementById("form7").style.visibility="visible";	
document.getElementById("form6").style.display="none";
document.getElementById("form7").style.display="block";
return false;
}



if(n==7)
{
document.getElementById("form7").style.visibility="hidden";
document.getElementById("form8").style.visibility="visible";
document.getElementById("form7").style.display="none";
document.getElementById("form8").style.display="block";
return false;
}



if(n==8)
{
document.getElementById("form8").style.visibility="hidden";
document.getElementById("form9").style.visibility="visible";
document.getElementById("form8").style.display="none";
document.getElementById("form9").style.display="block";
return false;
}



if(n==9)
{
document.getElementById("form9").style.visibility="hidden";
document.getElementById("form10").style.visibility="visible";
document.getElementById("form9").style.display="none";
document.getElementById("form10").style.display="block";
return false;
}




}


function bac()
{
n=n-1;	


if(n==0)
{
document.getElementById("form1").style.visibility="visible";	
document.getElementById("form2").style.visibility="hidden";	
document.getElementById("form1").style.display="block";	
document.getElementById("form2").style.display="none";	
return false;
}



if(n==1)
{
document.getElementById("form2").style.visibility="visible";	
document.getElementById("form3").style.visibility="hidden";	
document.getElementById("form2").style.display="block";	
document.getElementById("form3").style.display="none";	
return false;
}


if(n==2)
{
document.getElementById("form3").style.visibility="visible";	
document.getElementById("form4").style.visibility="hidden";	
document.getElementById("form3").style.display="block";	
document.getElementById("form4").style.display="none";	
return false;
}


if(n==3)
{
document.getElementById("form4").style.visibility="visible";	
document.getElementById("form5").style.visibility="hidden";	
document.getElementById("form4").style.display="block";	
document.getElementById("form5").style.display="none";	
return false;
}


if(n==4)
{
document.getElementById("form5").style.visibility="visible";	
document.getElementById("form6").style.visibility="hidden";	
document.getElementById("form5").style.display="block";	
document.getElementById("form6").style.display="none";	
return false;
}


if(n==5)
{
document.getElementById("form6").style.visibility="visible";	
document.getElementById("form7").style.visibility="hidden";	
document.getElementById("form6").style.display="block";	
document.getElementById("form7").style.display="none";	
return false;
}


if(n==6)
{
document.getElementById("form7").style.visibility="visible";	
document.getElementById("form8").style.visibility="hidden";	
document.getElementById("form7").style.display="block";	
document.getElementById("form8").style.display="none";	
return false;
}


if(n==7)
{
document.getElementById("form8").style.visibility="visible";	
document.getElementById("form9").style.visibility="hidden";	
document.getElementById("form8").style.display="block";	
document.getElementById("form9").style.display="none";	
return false;
}


if(n==8)
{
document.getElementById("form9").style.visibility="visible";	
document.getElementById("form10").style.visibility="hidden";
document.getElementById("form9").style.display="block";	
document.getElementById("form10").style.display="none";	
return false;
}



}