function c1F(f1){
	var t1 = f1.Class1ID;
	var oi = 1;
	t1.options[0]=new Option('---CLASS 1---','0');
	for(var i=0; i < C1A.length; i++){
		t1.options[oi]=new Option(C1A[i+1],C1A[i]);
		oi++;
		i++;
	}
	c2F(f1);
}

function c2F(f1){
	var t1 = f1.Class2ID;
	var NSelect = f1.Class1ID.options[f1.Class1ID.selectedIndex].value;
	var oi = 1;
	var i;
	for(i=t1.length; i > 0; i--) {t1.remove(i);}
	t1.options[0]=new Option('---CLASS 2---','0');
	for(i=0; i < C2A.length; i++){
		if( NSelect == C2A[i] ){t1.options[oi]=new Option(C2A[i+2],C2A[i+1]);oi++;}
		i = i + 2;
	}
	c3F(f1);
}

function c3F(f1){
	var t1 = f1.c3;
	var NSelect = f1.Class2ID.options[f1.Class2ID.selectedIndex].value;
	var oi = 1;
	var i;
	for(i=t1.length; i > 0; i--) {t1.remove(i);}
	t1.options[0]=new Option('---CLASS 3---','0');
	for(i=0; i < C3A.length; i++){
		if( NSelect == C3A[i] && NSelect!='0' ){t1.options[oi]=new Option(C3A[i+2],C3A[i+1]);oi++;}
		i = i + 2;
	}
}


function DSelect(t1,s){
	for(i=0; i<t1.length; i++) {
		if(t1.options[i].value==s){t1.options[i].selected=true;return;}
	}
}