var tids=new Array('t1','t2','t3','t4','t5','t6','t7','t8','t9','t10');
var rids=new Array('r1');

function switchtids(id){ 
 hidealltids();
 showdiv(id);
}

function hidealltids(){
 //loop through the array and hide each element by id
 for (var i=0;i<tids.length;i++){
  hidediv(tids[i]);
 }    
}
function switchrids(id){ 
 hideallrids();
 showdiv(id);
}

function hideallrids(){
 //loop through the array and hide each element by id
 for (var i=0;i<rids.length;i++){
  hidediv(rids[i]);
 }    
}

function hidediv(id) {
 //safe function to hide an element with a specified id
 if (document.getElementById) { // DOM3 = IE5, NS6
  document.getElementById(id).style.display = 'none';
 }
 else {
  if (document.layers) { // Netscape 4
   document.id.display = 'none';
  }
  else { // IE 4
   document.all.id.style.display = 'none';
  }
 }
}

function showdiv(id) {
 //safe function to show an element with a specified id
    
 if (document.getElementById) { // DOM3 = IE5, NS6
  document.getElementById(id).style.display = 'block';
 }
 else {
  if (document.layers) { // Netscape 4
   document.id.display = 'block';
  }
  else { // IE 4
   document.all.id.style.display = 'block';
  }
 }
}