image1 = new Image();
image1.src ="images/leftcircle-on_01.gif";
image2 = new Image();
image2.src ="images/leftcircle-on_02.gif";
image3 = new Image();
image3.src ="images/leftcircle-on_03.gif";
image4 = new Image();
image4.src ="images/leftcircle-on_04.gif";
image5 = new Image();
image5.src ="images/leftcircle-on_05.gif";
image6 = new Image();
image6.src ="images/leftcircle-on_06.gif";
image7 = new Image();
image7.src ="images/leftcircle-on_07.gif";

function calculateTotals () {

        for (i=0; i < document.regform.reg_type.length; i++) {
                if (document.regform.reg_type[i].checked == true) {
                                regType = document.regform.reg_type[i].value;
                }
        }

        switch (regType) {

                case 'couple':
                        total = 20;
                        break

                case 'single':
                        total = 15;
                        break

		case 'group':
			total = 30;
			break;

                default:
                        total = 15;
                        break
        }

        document.regform.elements['total'].value=total;

}