//---------------------------------------------------------------------------------------------
function changePrice(){
	var sc, sf, st;
	sc = 0;
	sf = 0;
	st = 0;
	
	var radioc = document.getElementsByName('cred1');
	
	if(radioc[0].checked)
		sc = 6;
	else if(radioc[1].checked)
		sc = 15;
	else if(radioc[2].checked)
		sc = 20;
	else if(radioc[3].checked)
		sc = 30;
	else if(radioc[4].checked)
		sc = 40;
	else 
		sc = 0;
	
	var radiof = document.getElementsByName('firm1');
	
	if(radiof[0].checked)
		sf = 25;
	else if(radiof[1].checked)
		sf = 30;
	else if(radiof[2].checked)
		sf = 40;
	else
		sf = 0;
	
	st = sc+sf;

	document.getElementById('tcom').value= st;
	
};