function changeOptions(chosen) {

	var selbox = document.appsForm.appName;
 
	selbox.options.length = 0;
	
	if (chosen == "") {
	  selbox.options[selbox.options.length] = new Option('Select Application','');
	  document.appsForm.btnSubmit.disabled = true;
	}
	
	if (chosen == "acord") {
	  selbox.options[selbox.options.length] = new Option('Commercial Auto','acord_commercial.pdf');
	  selbox.options[selbox.options.length] = new Option('Business Auto','acord_business.pdf');
	  document.appsForm.btnSubmit.disabled = false;
	}
	
	if (chosen == "adriatic") {
	  selbox.options[selbox.options.length] = new Option('Truck','adriatic_truck.pdf');
	  selbox.options[selbox.options.length] = new Option('Cargo','adriatic_cargo.pdf');
	  document.appsForm.btnSubmit.disabled = false;
	}
	
	if (chosen == "amsouthern") {
	  selbox.options[selbox.options.length] = new Option('Commercial Auto','amsouthern_commercial.pdf');
	  document.appsForm.btnSubmit.disabled = false;
	}
	
	if (chosen == "carolina") {
	  selbox.options[selbox.options.length] = new Option('Commercial Fleet','carolina_commercial.pdf');
	  selbox.options[selbox.options.length] = new Option('Non-Fleet','carolina_nonfleet.pdf');
	  selbox.options[selbox.options.length] = new Option('Non-Trucking','carolina_nontrucking.pdf');
	  document.appsForm.btnSubmit.disabled = false;
	}
	
	if (chosen == "easternatlantic") {
	  selbox.options[selbox.options.length] = new Option('Commercial Auto','easternatlantic_commercial.pdf');
	  selbox.options[selbox.options.length] = new Option('Cargo','easternatlantic_cargo.pdf');
	  document.appsForm.btnSubmit.disabled = false;
	}
	
	if (chosen == "zurich") {
	  selbox.options[selbox.options.length] = new Option('Non-Trucking','zurich_nontrucking.pdf');
	  document.appsForm.btnSubmit.disabled = false;
	}

}