showplusimg = '/images/plus2.gif';
showminusimg = '/images/minus2.gif';
function toggle(m){
  if(document.getElementById(m)){
    var test = document.getElementById(m).style.display;
    if(test == 'block'){
      document.getElementById(m).style.display="none";
      if(document.getElementById('img_'+m)){
        document.getElementById('img_'+m).src= showplusimg;
      }
      if(document.getElementById('view_'+m)){
        document.getElementById('view_'+m).style.display="block";
      }
      if(document.getElementById('hide_'+m)){
        document.getElementById('hide_'+m).style.display="none";
      }
    }
    else{
      document.getElementById(m).style.display="block";
      if(document.getElementById('img_'+m)){
        document.getElementById('img_'+m).src= showminusimg;
      }
      if(document.getElementById('view_'+m)){
        document.getElementById('view_'+m).style.display="none";
      }
      if(document.getElementById('hide_'+m)){
        document.getElementById('hide_'+m).style.display="block";
      }
    }
  }
}