// <![CDATA[
function Trim(stringa){
	while (stringa.substring(0,1) == ' '){
		stringa = stringa.substring(1, stringa.length);
	}
	while (stringa.substring(stringa.length-1, stringa.length) == ' '){
		stringa = stringa.substring(0,stringa.length-1);
	}
	return stringa;
}

function prendiElementoDaId(id_elemento) {
	var elemento;
	if(document.getElementById)
		elemento = document.getElementById(id_elemento);
	else
		elemento = document.all[id_elemento];
	
	return elemento;
}


function showHideImg(obj, value){
	prendiElementoDaId(obj).style.visibility=value;
}	

function PulisciHtml(html) {
	var htmlDIV = document.createElement("DIV");
	htmlDIV.innerHTML = html;
	if (htmlDIV.innerText) {
		return htmlDIV.innerText; // Internet Explorer
	} else {
		return htmlDIV.textContent; // Mozilla Firefox
	}
}
// ]]>