var subs_array=new Array("sub1","sub2","sub3","sub4","sub5","sub6","sub7","sub8","sub9","sub10","sub11","sub12","sub13", "sub14","sub15","sub16", "sub17","sub18","sub19","sub20","sub21");
function displaySubs(the_sub){if(document.getElementById(the_sub).style.display==""){document.getElementById(the_sub).style.display="none";return}
for(i=0;i<subs_array.length;i++){var my_sub=document.getElementById(subs_array[i]);my_sub.style.display="none";}
document.getElementById(the_sub).style.display="";}

var subs_array2=new Array("sub1","sub2","sub3");
function displaySubs2(the_sub){if(document.getElementById(the_sub).style.display==""){document.getElementById(the_sub).style.display="none";return}
for(i=0;i<subs_array2.length;i++){var my_sub=document.getElementById(subs_array2[i]);my_sub.style.display="none";}
document.getElementById(the_sub).style.display="";}


var subs_array3=new Array("12string", "13string", "16string", "20string", "24string", "32string");
function displaySubs3(the_sub){if(document.getElementById(the_sub).style.display==""){document.getElementById(the_sub).style.display="none";return}
for(i=0;i<subs_array3.length;i++){var my_sub=document.getElementById(subs_array3[i]);my_sub.style.display="none";}
document.getElementById(the_sub).style.display="";}

var subs_array4=new Array("sub1","sub2");
function displaySubs4(the_sub){if(document.getElementById(the_sub).style.display==""){document.getElementById(the_sub).style.display="none";return}
for(i=0;i<subs_array4.length;i++){var my_sub=document.getElementById(subs_array4[i]);my_sub.style.display="none";}
document.getElementById(the_sub).style.display="";}

var subs_array5=new Array("sub1","sub2","sub3");
function displaySubs5(the_sub){if(document.getElementById(the_sub).style.display==""){document.getElementById(the_sub).style.display="none";return}
for(i=0;i<subs_array5.length;i++){var my_sub=document.getElementById(subs_array5[i]);my_sub.style.display="none";}
document.getElementById(the_sub).style.display="";}

var subs_array6=new Array("sub1","sub2");
function displaySubs6(the_sub){if(document.getElementById(the_sub).style.display==""){document.getElementById(the_sub).style.display="none";return}
for(i=0;i<subs_array6.length;i++){var my_sub=document.getElementById(subs_array6[i]);my_sub.style.display="none";}
document.getElementById(the_sub).style.display="";}