function changecheck(){
if (document.sel.rtype.selectedIndex == 0){
Menue1();
}else{
Menue2();
};

};
function Menue1(){
m1option1 = new Option("weniger als 30 Euro", "0");
m1option2 = new Option("30 - 40 Euro", "1");
m1option3 = new Option("40 - 50 Euro", "2");
m1option4 = new Option("50 - 60 Euro", "3");
m1option5 = new Option("mehr als 60 Euro", "4");
m1Options = document.sel.pclass;
m1Options[0] = m1option1;
m1Options[1] = m1option2;
m1Options[2] = m1option3;
m1Options[3] = m1option4;
m1Options[4] = m1option5;
document.sel.pclass.selectedIndex = 0;

}

function Menue2(){

m2option1 = new Option("weniger als 40 Euro", "0");
m2option2 = new Option("40 - 60 Euro", "1");
m2option3 = new Option("60 - 75 Euro", "2");
m2option4 = new Option("mehr als 75 Euro", "3");
m2option5 = new Option("", "4");

m2Options =  document.sel.pclass;

m2Options[0] = m2option1;
m2Options[1] = m2option2;
m2Options[2] = m2option3;
m2Options[3] = m2option4;
m2Options[4] = m2option5;
document.sel.pclass.selectedIndex = 0;
};
changecheck();