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/2010/TariffAir2010.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/2010/TariffAirSelfTaught2010.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/2010/TariffAirLight2010.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/2010/TariffCoach2010.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/2010/TariffCoachSelfTaught2010.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/2010/TariffCoachLight2010.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/2010/TariffOwnCoach2010.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/2010/TariffOwnCoachSelfTaught2010.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/2010/TariffOwnCoachLight2010.php","_blank","resizable=yes, scrollbars=yes,toolbar=yes,location=yes,width=800,height=540,top=0,left=0") 
   }
return true;
}