function goto(t){
    if ( t==1 ){
   document.getElementById("layer1").style.display = "inline";
   document.getElementById("layer2").style.display = "none";
  } else if ( t==2 ){
   document.getElementById("layer1").style.display = "none";
   document.getElementById("layer2").style.display = "inline";
}  else if ( t==3 ){
   document.getElementById("layer3").style.display = "inline";
   document.getElementById("layer4").style.display = "none";
} else if ( t==4 ){
   document.getElementById("layer3").style.display = "none";
   document.getElementById("layer4").style.display = "inline";
} else if ( t==5 ){
   document.getElementById("layer5").style.display = "inline";
   document.getElementById("layer6").style.display = "none";
} else if ( t==6 ){
   document.getElementById("layer5").style.display = "none";
   document.getElementById("layer6").style.display = "inline";
}  else if ( t==7 ){
   document.getElementById("layer7").style.display = "inline";
   document.getElementById("layer8").style.display = "none";
} else if ( t==8 ){
   document.getElementById("layer7").style.display = "none";
   document.getElementById("layer8").style.display = "inline";
} else if ( t==9 ){
   document.getElementById("layer9").style.display = "inline";
   document.getElementById("layer10").style.display = "none";
} else if ( t==10 ){
   document.getElementById("layer9").style.display = "none";
   document.getElementById("layer10").style.display = "inline";
} else if ( t==11 ){
   document.getElementById("layer11").style.display = "inline";
   document.getElementById("layer12").style.display = "none";
} else if ( t==12 ){
   document.getElementById("layer11").style.display = "none";
   document.getElementById("layer12").style.display = "inline";
} else if ( t==13 ){
    document.getElementById("layer13").style.display = "inline";
    document.getElementById("layer14").style.display = "none";
	document.getElementById("layer15").style.display = "none";
	//document.all.layer16.className="hidden";
} else if ( t==14 ){
    document.getElementById("layer13").style.display = "none";
    document.getElementById("layer14").style.display = "inline";
	document.getElementById("layer15").style.display = "none";
	//document.all.layer16.className="hidden";	
} else if ( t==15 ){
    document.getElementById("layer13").style.display = "none";
    document.getElementById("layer14").style.display = "none";
	document.getElementById("layer15").style.display = "inline";
	//document.all.layer16.className="hidden";
//} else if ( t==16 ){
    //document.all.layer13.className="hidden";
    //document.all.layer14.className="hidden";
	//document.all.layer15.className="hidden";
	//document.all.layer16.className="display";	
} else if ( t==17 ){
    document.getElementById("layer17").style.display = "inline";
    document.getElementById("layer18").style.display = "none";
	document.getElementById("layer19").style.display = "none";
	document.getElementById("layer20").style.display = "none";
} else if ( t==18 ){
    document.getElementById("layer17").style.display = "none";
    document.getElementById("layer18").style.display = "inline";
	document.getElementById("layer19").style.display = "none";
	document.getElementById("layer20").style.display = "none";
} else if ( t==19 ){
    document.getElementById("layer17").style.display = "none";
    document.getElementById("layer18").style.display = "none";
	document.getElementById("layer19").style.display = "inline";
	document.getElementById("layer20").style.display = "none";
} else if ( t==20 ){
    document.getElementById("layer17").style.display = "none";
    document.getElementById("layer18").style.display = "none";
	document.getElementById("layer19").style.display = "none";
	document.getElementById("layer20").style.display = "inline";
} else if ( t==21 ){
    document.getElementById("layer21").style.display = "inline";
    document.getElementById("layer22").style.display = "none";
	document.getElementById("layer23").style.display = "none";
	document.getElementById("layer24").style.display = "none";
	document.getElementById("layer25").style.display = "none";
	document.getElementById("layer26").style.display = "none";
	document.getElementById("layer27").style.display = "none";
	document.getElementById("layer28").style.display = "none";
	document.getElementById("layer29").style.display = "none";
	document.getElementById("layer30").style.display = "none";
} else if ( t==22 ){
    document.getElementById("layer21").style.display = "none";
    document.getElementById("layer22").style.display = "inline";
	document.getElementById("layer23").style.display = "none";
	document.getElementById("layer24").style.display = "none";
	document.getElementById("layer25").style.display = "none";
	document.getElementById("layer26").style.display = "none";
	document.getElementById("layer27").style.display = "none";
	document.getElementById("layer28").style.display = "none";
	document.getElementById("layer29").style.display = "none";
	document.getElementById("layer30").style.display = "none";
} else if ( t==23 ){
    document.getElementById("layer21").style.display = "none";
    document.getElementById("layer22").style.display = "none";
	document.getElementById("layer23").style.display = "inline";
	document.getElementById("layer24").style.display = "none";
	document.getElementById("layer25").style.display = "none";
	document.getElementById("layer26").style.display = "none";
	document.getElementById("layer27").style.display = "none";
	document.getElementById("layer28").style.display = "none";
	document.getElementById("layer29").style.display = "none";
	document.getElementById("layer30").style.display = "none";
} else if ( t==24 ){
    document.getElementById("layer21").style.display = "none";
    document.getElementById("layer22").style.display = "none";
	document.getElementById("layer23").style.display = "none";
	document.getElementById("layer24").style.display = "inline";
	document.getElementById("layer25").style.display = "none";
	document.getElementById("layer26").style.display = "none";
	document.getElementById("layer27").style.display = "none";
	document.getElementById("layer28").style.display = "none";
	document.getElementById("layer29").style.display = "none";
	document.getElementById("layer30").style.display = "none";
} else if ( t==25 ){
    document.getElementById("layer21").style.display = "none";
    document.getElementById("layer22").style.display = "none";
	document.getElementById("layer23").style.display = "none";
	document.getElementById("layer24").style.display = "none";
	document.getElementById("layer25").style.display = "inline";
	document.getElementById("layer26").style.display = "none";
	document.getElementById("layer27").style.display = "none";
	document.getElementById("layer28").style.display = "none";
	document.getElementById("layer29").style.display = "none";
	document.getElementById("layer30").style.display = "none";
} else if ( t==26 ){
    document.getElementById("layer21").style.display = "none";
    document.getElementById("layer22").style.display = "none";
	document.getElementById("layer23").style.display = "none";
	document.getElementById("layer24").style.display = "none";
	document.getElementById("layer25").style.display = "none";
	document.getElementById("layer26").style.display = "inline";
	document.getElementById("layer27").style.display = "none";
	document.getElementById("layer28").style.display = "none";
	document.getElementById("layer29").style.display = "none";
	document.getElementById("layer30").style.display = "none";
} else if ( t==27 ){
    document.getElementById("layer21").style.display = "none";
    document.getElementById("layer22").style.display = "none";
	document.getElementById("layer23").style.display = "none";
	document.getElementById("layer24").style.display = "none";
	document.getElementById("layer25").style.display = "none";
	document.getElementById("layer26").style.display = "none";
	document.getElementById("layer27").style.display = "inline";
	document.getElementById("layer28").style.display = "none";
	document.getElementById("layer29").style.display = "none";
	document.getElementById("layer30").style.display = "none";
} else if ( t==28 ){
    document.getElementById("layer21").style.display = "none";
    document.getElementById("layer22").style.display = "none";
	document.getElementById("layer23").style.display = "none";
	document.getElementById("layer24").style.display = "none";
	document.getElementById("layer25").style.display = "none";
	document.getElementById("layer26").style.display = "none";
	document.getElementById("layer27").style.display = "none";
	document.getElementById("layer28").style.display = "inline";
	document.getElementById("layer29").style.display = "none";
	document.getElementById("layer30").style.display = "none";
} else if ( t==29 ){
    document.getElementById("layer21").style.display = "none";
    document.getElementById("layer22").style.display = "none";
	document.getElementById("layer23").style.display = "none";
	document.getElementById("layer24").style.display = "none";
	document.getElementById("layer25").style.display = "none";
	document.getElementById("layer26").style.display = "none";
	document.getElementById("layer27").style.display = "none";
	document.getElementById("layer28").style.display = "none";
	document.getElementById("layer29").style.display = "inline";
	document.getElementById("layer30").style.display = "none";
}
else if ( t==30 ){
    document.getElementById("layer21").style.display = "none";
    document.getElementById("layer22").style.display = "none";
	document.getElementById("layer23").style.display = "none";
	document.getElementById("layer24").style.display = "none";
	document.getElementById("layer25").style.display = "none";
	document.getElementById("layer26").style.display = "none";
	document.getElementById("layer27").style.display = "none";
	document.getElementById("layer28").style.display = "none";
	document.getElementById("layer29").style.display = "none";
	document.getElementById("layer30").style.display = "inline";
}
 }