function setOptions(chosen) {
var selbox = document.myform.opttwo;
 
selbox.options.length = 0;
if (chosen == " ") {
  selbox.options[selbox.options.length] = new Option('Please select one of the options above first',' ');
 
}

/*if (chosen == "atr") {
	selbox.options[selbox.options.length] = new
Option('Select Model','');
  selbox.options[selbox.options.length] = new
Option('802','http://www.wipaire.com/myaircraft/air_tractor/index.php');
 
}*/
if (chosen == "acs") {
	selbox.options[selbox.options.length] = new
Option('Select Model','');
  selbox.options[selbox.options.length] = new
Option('Scout 8GCBC','http://www.wipaire.com/myaircraft/american_champion/8GCBC/index.php');
  /*selbox.options[selbox.options.length] = new
Option('Champ 7GCBC','http://www.wipaire.com/myaircraft/american_champion/7GCBC/index.php');*/

}
if (chosen == "avt") {
	selbox.options[selbox.options.length] = new
Option('Select Model','');
  selbox.options[selbox.options.length] = new
Option('Husky','http://www.wipaire.com/myaircraft/aviat/a1/index.php');
  /*selbox.options[selbox.options.length] = new
Option('A1A Husky','http://www.wipaire.com/myaircraft/aviat/a1/index.php');
selbox.options[selbox.options.length] = new
Option('A1B Husky','http://www.wipaire.com/myaircraft/aviat/a1/index.php');
selbox.options[selbox.options.length] = new
Option('A1C Husky','http://www.wipaire.com/myaircraft/aviat/a1/index.php');*/
}

if (chosen == "bch") {
	selbox.options[selbox.options.length] = new
Option('Select Model','');
/*  selbox.options[selbox.options.length] = new
Option('B18 Twin Beech','http://www.wipaire.com/myaircraft/beechcraft/B18/index.php');
  selbox.options[selbox.options.length] = new
Option('B60 Duke','http://www.wipaire.com/myaircraft/beechcraft/B60/index.php');
selbox.options[selbox.options.length] = new
Option('B95 Travelair','http://www.wipaire.com/myaircraft/beechcraft/B95/index.php');*/
selbox.options[selbox.options.length] = new
Option('King Air','http://www.wipaire.com/myaircraft/beechcraft/king_air/index.php');
}

if (chosen == "ces") {
	selbox.options[selbox.options.length] = new
Option('Select Model','');
/*selbox.options[selbox.options.length] = new
Option('150','http://www.wipaire.com/myaircraft/cessna/150/index.php');*/
  selbox.options[selbox.options.length] = new
Option('170','http://www.wipaire.com/myaircraft/cessna/170/index.php');
  selbox.options[selbox.options.length] = new
Option('172 Skyhawk','http://www.wipaire.com/myaircraft/cessna/172/index.php');
  selbox.options[selbox.options.length] = new
Option('175 Skylark','http://www.wipaire.com/myaircraft/cessna/175/index.php');
/*selbox.options[selbox.options.length] = new
Option('177 Cardinal','http://www.wipaire.com/myaircraft/cessna/177/index.php');*/
  selbox.options[selbox.options.length] = new
Option('180 Skywagon','http://www.wipaire.com/myaircraft/cessna/180/index.php');
selbox.options[selbox.options.length] = new
Option('182 Skylane','http://www.wipaire.com/myaircraft/cessna/182/index.php');
selbox.options[selbox.options.length] = new
Option('185 Skywagon','http://www.wipaire.com/myaircraft/cessna/185/index.php');
selbox.options[selbox.options.length] = new
Option('206 Stationair','http://www.wipaire.com/myaircraft/cessna/206/index.php');
  selbox.options[selbox.options.length] = new
Option('208 Caravan','http://www.wipaire.com/myaircraft/cessna/208/index.php');
/*selbox.options[selbox.options.length] = new
Option('210 Centurion','http://www.wipaire.com/myaircraft/cessna/210/index.php');
selbox.options[selbox.options.length] = new
Option('303 Crusader','http://www.wipaire.com/myaircraft/cessna/303/index.php');
selbox.options[selbox.options.length] = new
Option('310','http://www.wipaire.com/myaircraft/cessna/310/index.php');
selbox.options[selbox.options.length] = new
Option('340','http://www.wipaire.com/myaircraft/cessna/340/index.php');
selbox.options[selbox.options.length] = new
Option('350','http://www.wipaire.com/myaircraft/cessna/350/index.php');
selbox.options[selbox.options.length] = new
Option('400','http://www.wipaire.com/myaircraft/cessna/400/index.php');
selbox.options[selbox.options.length] = new
Option('414','http://www.wipaire.com/myaircraft/cessna/414/index.php');*/
}
if (chosen == "cubc") {
	selbox.options[selbox.options.length] = new
Option('Select Model','');
  selbox.options[selbox.options.length] = new
Option('2300# Top Cub','http://www.wipaire.com/myaircraft/cub_crafters/index.php');
}
if (chosen == "dehv") {
	selbox.options[selbox.options.length] = new
Option('Select Model','');
  selbox.options[selbox.options.length] = new
Option('DHC-2 MKI Beaver','http://www.wipaire.com/myaircraft/dehavilland/DHC2_MK1/index.php');
  selbox.options[selbox.options.length] = new
Option('DHC-2 MKIII Beaver','http://www.wipaire.com/myaircraft/dehavilland/DHC2_MK3/index.php');
/*selbox.options[selbox.options.length] = new
Option('DHC-3 Turbine Otter','http://www.wipaire.com/myaircraft/dehavilland/DHC3_turbine_otter/index.php');*/
  selbox.options[selbox.options.length] = new
Option('DHC-3 Otter','http://www.wipaire.com/myaircraft/dehavilland/DHC3_otter/index.php');
selbox.options[selbox.options.length] = new
Option('Wipaire Turbine Boss Beaver','http://www.wipaire.com/wipmods/boss_beaver.php');
  selbox.options[selbox.options.length] = new
Option('DHC-6 Twin Otter','http://www.wipaire.com/myaircraft/dehavilland/DHC6_twin_otter/index.php');
}
if (chosen == "mau") {
	selbox.options[selbox.options.length] = new
Option('Select Model','');
  selbox.options[selbox.options.length] = new
Option('M6-235 Super Rocket','http://www.wipaire.com/myaircraft/maule/M6-235/index.php');
selbox.options[selbox.options.length] = new
Option('M7-235 Super Rocket','http://www.wipaire.com/myaircraft/maule/M7-MT7/index.php');
selbox.options[selbox.options.length] = new
Option('MT7-235','http://www.wipaire.com/myaircraft/maule/M7-MT7/index.php');
selbox.options[selbox.options.length] = new
Option('MT7-260','http://www.wipaire.com/myaircraft/maule/M7-MT7/index.php');
selbox.options[selbox.options.length] = new
Option('MT7-420','http://www.wipaire.com/myaircraft/maule/M7-MT7/index.php');
  selbox.options[selbox.options.length] = new
Option('M7-260','http://www.wipaire.com/myaircraft/maule/M7-MT7/index.php');
selbox.options[selbox.options.length] = new
Option('M7A-420','http://www.wipaire.com/myaircraft/maule/M7-MT7/index.php');
selbox.options[selbox.options.length] = new
Option('M7AC-420','http://www.wipaire.com/myaircraft/maule/M7-MT7/index.php');

/*selbox.options[selbox.options.length] = new
Option('M7-420 Turbine','http://www.wipaire.com/myaircraft/maule/M7-420/index.php');*/
selbox.options[selbox.options.length] = new
Option('MX7-180 Star Rocket','http://www.wipaire.com/myaircraft/maule/MX7-180-420/index.php');
selbox.options[selbox.options.length] = new
Option('MX7-420','http://www.wipaire.com/myaircraft/maule/MX7-180-420/index.php');
  selbox.options[selbox.options.length] = new
Option('MX7-235','http://www.wipaire.com/myaircraft/maule/MX7-235/index.php');
}

/*if (chosen == "mny") {
	selbox.options[selbox.options.length] = new
Option('Select Model','');
  selbox.options[selbox.options.length] = new
Option('M20M Bravo','http://www.wipaire.com/myaircraft/mooney/M20M/index.php');
}*/

/*if (chosen == "pav") {
	selbox.options[selbox.options.length] = new
Option('Select Model','');
  selbox.options[selbox.options.length] = new
Option('P68','http://www.wipaire.com/myaircraft/partenavia/P68/index.php');
}*/
if (chosen == "plpt") {
	selbox.options[selbox.options.length] = new
Option('Select Model','');
  selbox.options[selbox.options.length] = new
Option('PC-6 Porter','http://www.wipaire.com/myaircraft/pilatus/PC-6/index.php');
}
if (chosen == "pip") {
	selbox.options[selbox.options.length] = new
Option('Select Model','');
  selbox.options[selbox.options.length] = new
Option('PA-12 Super Cruiser','http://www.wipaire.com/myaircraft/piper/PA12/index.php');
  selbox.options[selbox.options.length] = new
Option('PA-18 Super Cub','http://www.wipaire.com/myaircraft/piper/PA18/index.php');
/*  selbox.options[selbox.options.length] = new
Option('PA-22 Tri-Pacer','http://www.wipaire.com/myaircraft/piper/PA22/index.php');
  selbox.options[selbox.options.length] = new
Option('PA-28 Cherokee','http://www.wipaire.com/myaircraft/piper/PA28/index.php');
  selbox.options[selbox.options.length] = new
Option('PA-31 Navajo','http://www.wipaire.com/myaircraft/piper/PA31/index.php');
  selbox.options[selbox.options.length] = new
Option('PA-32 Cherokee Six','http://www.wipaire.com/myaircraft/piper/PA32/index.php');
  selbox.options[selbox.options.length] = new
Option('PA-46 Malibu','http://www.wipaire.com/myaircraft/piper/PA46/index.php');*/
}
if (chosen == "qst") {
	selbox.options[selbox.options.length] = new
Option('Select Model','');
  selbox.options[selbox.options.length] = new
Option('kodiak','http://www.wipaire.com/myaircraft/quest/kodiak/index.php');
}
if (chosen == "other") {
  selbox.options[selbox.options.length] = new
Option('Select Model','');
  selbox.options[selbox.options.length] = new
Option('Other','http://www.wipaire.com/myaircraft/other/index.php');
}
/*if (chosen == "soc") {
	selbox.options[selbox.options.length] = new
Option('Select Model','');
  selbox.options[selbox.options.length] = new
Option('TBM700','http://www.wipaire.com/myaircraft/socata/TBM700/index.php');
}*/
/*if (chosen == "vans") {
	selbox.options[selbox.options.length] = new
Option('Select Model','');
  selbox.options[selbox.options.length] = new
Option('RV4','http://www.wipaire.com/myaircraft/vans/RV4/index.php');
}*/
}
// JavaScript Document