function CalcMe(arg1) { 
var thisform = document.getElementById(arg1); // Gets ID of form
var ttlPrice = 0;
var desType = new Array();
switch (arg1){
case "Bus1Form": 
 		desType[0] = "0";	//"Choose"
  		desType[1] = "380";	//"Koh Chang to Bkk(Khao San rd.)"
  		desType[2] = "380";	//"Bkk(Khao San rd.) to Koh Chang"
  		desType[3] = "380";	//"Bkk(Hua Lampong) to Koh Chang"
		desType[4] = "380";	//"Koh Chang to Koh Samet"
		break;
case "Bus2Form": 
 		desType[0] = "0";	//"Choose"
  		desType[1] = "200";	//"Koh Chang to Bkk(Khao San rd.)"
  		desType[2] = "250";	//"Bkk(Khao San rd.) to Koh Chang"
  		desType[3] = "350";	//"Bkk(Hua Lampong) to Koh Chang"
		desType[4] = "250";	//"Koh Chang to Koh Samet"
		break;
}
thisform.adultPrice.value=desType[thisform.desType.selectedIndex];
ttlPrice = parseInt(thisform.adultNo.value) * parseInt(thisform.adultPrice.value);
thisform.totalPrice.value = ttlPrice;
}