function randomBanner ( myArray ) {
  var i = myArray.length;
  if ( i == 0 ) return false;
  while ( --i ) {
     var j = Math.floor( Math.random() * ( i + 1 ) );
     var tempi = myArray[i];
     var tempj = myArray[j];
     myArray[i] = tempj;
     myArray[j] = tempi;
   }
}

var asBanner = new Array ( 1, 2, 3, 4, 5, 6, 7);
randomBanner(asBanner);
var iNum1 = asBanner[0];
var iNum2 = asBanner[1];

switch (iNum1) {
	case 1:
		document.write('<a href="http://www.kbevent.com" target="_blank" onClick=javascript:urchinTracker("/outgoing/kbevent");><img src="images/adverts/psa_ad_1.gif" border="0"></a><br><br>');
	break;
	case 2:
		document.write('<a href="http://www.capital-sound.com" target="_blank" onClick=javascript:urchinTracker("/outgoing/capitalsound");><img src="images/adverts/psa_ad_2.gif" border="0"></a><br><br>');
	break;
	case 3:
		document.write('<a href="http://www.stareventsgroup.com/" target="_blank" onClick=javascript:urchinTracker("/outgoing/stareventsgroup");><img src="images/adverts/psa_ad_3.gif" border="0"></a><br><br>');
	break;
	case 4:
		document.write('<a href="http://www.the-eventsafetyshop.co.uk/" target="_blank" onClick=javascript:urchinTracker("/outgoing/eventsafetyshop");><img src="images/adverts/psa_ad_4.gif" border="0"></a><br><br>');
	break;
	case 5:
		document.write('<a href="http://www.adlibsolutions.co.uk/" target="_blank" onClick=javascript:urchinTracker("/outgoing/adlibaudio");><img src="images/adverts/psa_ad_5.gif" border="0"></a><br><br>');
	break;
	case 6:
		document.write('<a href="http://www.sse-hire.com/" target="_blank" onClick=javascript:urchinTracker("/outgoing/ssehire");><img src="images/adverts/psa_ad_6.gif" border="0"></a><br><br>');
	break;
	case 7:
		document.write('<a href="http://www.stagesafe.co.uk" target="_blank" onClick=javascript:urchinTracker("/outgoing/stagesafe");><img src="images/adverts/pas_ad_stagesafe.gif" border="0"></a><br><br>');
	break;
	default: 
		document.write('<a href="http://www.kbevent.com" target="_blank" onClick=javascript:urchinTracker("/outgoing/kbevent");><img src="images/adverts/psa_ad_1.gif" border="0"></a><br><br>');
}

switch (iNum2) {
	case 1:
		document.write('<a href="http://www.kbevent.com" target="_blank" onClick=javascript:urchinTracker("/outgoing/kbevent");><img src="images/adverts/psa_ad_1.gif" border="0"></a><br><br>');
	break;
	case 2:
		document.write('<a href="http://www.capital-sound.com" target="_blank" onClick=javascript:urchinTracker("/outgoing/capitalsound");><img src="images/adverts/psa_ad_2.gif" border="0"></a><br><br>');
	break;
	case 3:
		document.write('<a href="http://www.stareventsgroup.com/" target="_blank" onClick=javascript:urchinTracker("/outgoing/stareventsgroup");><img src="images/adverts/psa_ad_3.gif" border="0"></a><br><br>');
	break;
	case 4:
		document.write('<a href="http://www.the-eventsafetyshop.co.uk/" target="_blank" onClick=javascript:urchinTracker("/outgoing/eventsafetyshop");><img src="images/adverts/psa_ad_4.gif" border="0"></a><br><br>');
	break;
	case 5:
		document.write('<a href="http://www.adlibsolutions.co.uk/" target="_blank" onClick=javascript:urchinTracker("/outgoing/adlibaudio");><img src="images/adverts/psa_ad_5.gif" border="0"></a><br><br>');
	break;
	case 6:
		document.write('<a href="http://www.sse-hire.com/" target="_blank" onClick=javascript:urchinTracker("/outgoing/ssehire");><img src="images/adverts/psa_ad_6.gif" border="0"></a><br><br>');
	break;
	case 7:
		document.write('<a href="http://www.stagesafe.co.uk" target="_blank" onClick=javascript:urchinTracker("/outgoing/stagesafe");><img src="images/adverts/pas_ad_stagesafe.gif" border="0"></a><br><br>');
	break;
	default: 
		document.write('<a href="http://www.kbevent.com" target="_blank" onClick=javascript:urchinTracker("/outgoing/kbevent");><img src="images/adverts/psa_ad_1.gif" border="0"></a><br><br>');
}
