function checkForm(t) {
	if (!ChkInput(t.q0, "Množství", set_numeric, 0))  return false;
	return true;
}

function checkCohered(pid){
	var checkel = document.getElementById('coh_'+pid);
	var el = document.getElementById('i1');
	var elcnt = document.getElementById('itemCount');
	
	if (checkel.checked){
		el.value = pid;
		elcnt.value = 2;
	} 
	else {
		el.value = '';
		elcnt.value = 1;
	}
}