//example use: flipDIV( divtoshow, divtohide1, divtohide2, divtohide3 )
function flipDIV() {

  for (var i=0; i<arguments.length; i++ ) {
    if( i==0 )
      eval( "document.getElementById( '" + arguments[i] + "' ).style.display='block';");
    else
      eval( "document.getElementById( '" + arguments[i] + "' ).style.display='none';");
  }
} // flipDIV

function changeCSS(el, classname) {
  //alert( el.className + 'received ' + classname);
  el.className=classname;
} // changeCSS