function window_height() {
  var myHeight = 0;
  if( typeof( window.innerWidth ) == 'number' ) {
    //Non-IE
    myHeight = window.innerHeight;
  } else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
    //IE 6+ in 'standards compliant mode'
    myHeight = document.documentElement.clientHeight;
  } else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
    //IE 4 compatible
    myHeight = document.body.clientHeight;
  }
  return myHeight;
}

function window_width() {
  var myWidth = 0;
  if( typeof( window.innerWidth ) == 'number' ) {
    //Non-IE
    myWidth = window.innerWidth;
  } else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
    //IE 6+ in 'standards compliant mode'
    myWidth = document.documentElement.clientWidth;
  } else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
    //IE 4 compatible
    myWidth = document.body.clientWidth;
  }
  return myWidth;
}

function colour_strip() {
  var wide =  window_width();
  var high = wide/16;
  var stripnum = Math.floor(Math.random()*8) + 1;
  style = 'style="position: absolute; top: 0px; left: 0px;"';
  document.write( '<img '+style+' height='+high+' width='+wide+' src="/images/colour-strip.00'+stripnum+'.jpg" align=left>' );
  document.write( '<div style="padding-top: '+high+'px; margin: auto 0; text-align: center;"></div>' );
  
  
}