function detailsredirect(){
if (document.calc.Course[0].selected) {
alert("Please enter a Course option");
return false;
   }
if (document.calc.Travel[0].selected) {
alert("Please enter a Travel option");
return false;
   }
if (document.calc.Travel[1].selected && document.calc.Course[1].selected) {
window.open("http://geographyfieldwork.com/Tariffs/2011/TariffAir2011.php","_blank","resizable=yes,scrol lbars=yes,toolbar=yes,location=yes,width=800,height=540,top=0,left=0") 
   }
if ( document.calc.Travel[1].selected && document.calc.Course[2].selected) {
window.open("http://geographyfieldwork.com/Tariffs/2011/TariffAirSelfTaught2011.php","_blank","resizable=yes,scrollbars=yes,toolbar=yes,location=yes,width=800,height=540,top=0,left=0") 
   }
if (document.calc.Travel[1].selected && document.calc.Course[3].selected) {
window.open("http://geographyfieldwork.com/Tariffs/2011/TariffAirLight2011.php","_blank","resizable=yes,scrol lbars=yes,toolbar=yes,location=yes,width=800,height=540,top=0,left=0") 
   }
if ( document.calc.Travel[2].selected && document.calc.Course[1].selected) {
window.open("http://geographyfieldwork.com/Tariffs/2011/TariffCoach2011.php","_blank","resizable=yes,scr ollbars=yes,toolbar=yes,location=yes,width=800,height=540,top=0,left=0") 
   }
if ( document.calc.Travel[2].selected && document.calc.Course[2].selected) {
window.open("http://geographyfieldwork.com/Tariffs/2011/TariffCoachSelfTaught2011.php","_blank","resizable=yes,scrollbars=yes,toolbar=yes,location=yes,width=800,height=540,top=0,left=0") 
   }
if ( document.calc.Travel[2].selected && document.calc.Course[3].selected) {
window.open("http://geographyfieldwork.com/Tariffs/2011/TariffCoachLight2011.php","_blank","resizable=yes,scr ollbars=yes,toolbar=yes,location=yes,width=800,height=540,top=0,left=0") 
   }
if ( document.calc.Travel[3].selected && document.calc.Course[1].selected) {
window.open("http://geographyfieldwork.com/Tariffs/2011/TariffOwnCoach2011.php","_blank","resizable=yes, scrollbars=yes,toolbar=yes,location=yes,width=800,height=540,top=0,left=0") 
   }
if ( document.calc.Travel[3].selected && document.calc.Course[2].selected) {
window.open("http://geographyfieldwork.com/Tariffs/2011/TariffOwnCoachSelfTaught2011.php","_blank","resizable=yes,scrollbars=yes,toolbar=yes,location=yes,width=800,height=540,top=0,left=0") 
   }
if ( document.calc.Travel[3].selected && document.calc.Course[3].selected) {
window.open("http://geographyfieldwork.com/Tariffs/2011/TariffOwnCoachLight2011.php","_blank","resizable=yes, scrollbars=yes,toolbar=yes,location=yes,width=800,height=540,top=0,left=0") 
   }
return true;
}