function update() {
	var total=price_ptc;
	if(document.form.ptr.checked == true) {total+=price_ptr;}
	if(document.form.ptra.checked == true) {total+=price_ptra;}
	if(document.form.ce.checked == true) {total+=price_ce;}
	if(document.form.ptp.checked == true) {total+=price_ptp;}
	if(document.form.ptsu.checked == true) {total+=price_ptsu;}

	if(document.form.domainreg.checked == true) {
		document.getElementById('drc1').style.display='';
		total+=price_domain;
	}
	else {
		document.getElementById('drc1').style.display='none';
	}


	if(document.form.hosting.checked == true) {
		total+=price_hosting;
	}



	document.getElementById('total_text').innerHTML=''+total;
}