function jump(s) {
	var d = s.options[s.selectedIndex].value;
	location.href=d;
}
function gotoPageTop() {
	window.scrollTo(0,0);
}
function gotoColumnTop() {
	gotoPageTop();
}
function getObjById(id){
	var obj=document.all && document.all(id)
		|| document.getElementById && document.getElementById(id);
	return obj;
}

function changeRadio1(n){
	var obj = getObjById("vatBlock1");
	if(n==1){
		obj.style.display = "none";
	} else {
		obj.style.display = "block";
	}
}