function homepage()
{

 var rand=Math.random() * 100;
 
 if ( rand > 0 )
 {
 
   document.getElementById('mainbody').style.backgroundImage="url('base/images/home1.jpg')";
   
  }
  
 if ( rand > 33 )
 {
 
   document.getElementById('mainbody').style.backgroundImage="url('base/images/home2.jpg')";
   
  }  
  
 if ( rand > 66 )
 {
 
   document.getElementById('mainbody').style.backgroundImage="url('base/images/home3.jpg')";
   
  }    

}

function HideMail( person, domainname, tld, displayname )
{

  if ( displayname=='' )
  {
  
    displayname=person+'@'+domainname+tld;
  
  }

  address=person+'@'+domainname+tld;

  with( document )
  {

  writeln("<a href='mailto:"+address+"'>"+displayname+"</a>");
  
  }

}

function showhide(tagid)
{

  if ( document.getElementById(tagid).style.display=='block' )
  {

    document.getElementById(tagid).style.display='none';

  }
  else
  {

    document.getElementById(tagid).style.display='block';

  }

}

function show( objectID )
{

  document.getElementById( objectID ).style.display='block';
  document.getElementById( objectID+"arrow" ).style.display='block';

}

function hide( objectID )
{

  document.getElementById( objectID ).style.display='none';
  document.getElementById( objectID+"arrow" ).style.display='none';

}