function setOptions1(chosen) {
var selbox = document.myform1.Price;

 
selbox.options.length = 0;
if (chosen == "1/2in 101-043") {
  selbox.options[selbox.options.length] = new Option('4.60','4.60');
}
if (chosen == "3/4in 101-044") {
  selbox.options[selbox.options.length] = new Option('7.40','7.40');
}
if (chosen == "1in 101-045") {
  selbox.options[selbox.options.length] = new Option('10.75','10.75');
}
if (chosen == "1-1/4in 101-046") {
  selbox.options[selbox.options.length] = new Option('19.75','19.75');
}
if (chosen == "1-1/2in 101-047") {
  selbox.options[selbox.options.length] = new Option('24.50','24.50');
}
if (chosen == "2in 101-048") {
  selbox.options[selbox.options.length] = new Option('38.25','38.25');
}
if (chosen == "2-1/2in 101-209") {
  selbox.options[selbox.options.length] = new Option('143.50','143.50');
}
if (chosen == "3in 101-210") {
  selbox.options[selbox.options.length] = new Option('189.25','189.25');
}
if (chosen == "4in 101-211") {
  selbox.options[selbox.options.length] = new Option('398.75','398.75');
}
}