function showTab(pannello, cliccato, numelementi) {
	var i = 0;
	for (i=0; i < numelementi; i++) {
		if (i==cliccato) {
			jscss('set',$("tab"+pannello+"Content"+i),'tab');
			jscss('add',$("tab"+pannello+"Link"+i),'selected');
		}
		else {
			jscss('set',$("tab"+pannello+"Content"+i),'tabHidden');
			jscss('remove',$("tab"+pannello+"Link"+i),'selected');
		}
	}
}
function jscss(a,o,c1,c2) {
	switch (a){
		case 'set':
			o.className = c1;
			break;
		case 'add':
			if(!jscss('check',o,c1)) {
				o.className+=o.className?' '+c1:c1;
			}
			break;
		case 'remove':
			var rep=o.className.match(' '+c1)?' '+c1:c1;
			o.className=o.className.replace(rep,'');
			break;
		case 'check':
			return new RegExp('\\b'+c1+'\\b').test(o.className);
		break;
	}
}
function addLoadEvent(func) {
	var oldonload = window.onload;
	if (typeof window.onload != 'function') {
		window.onload = func;
	} 
	else {
		window.onload = function() {
			if (oldonload) {
				oldonload();
			}
			func();
		}
	}
}
function ignoreEvent(ev) {
    if (ev && ev.preventDefault) {
        ev.preventDefault();
        ev.stopPropagation();
    } else if (typeof(event) != 'undefined') {
        event.cancelBubble = false;
        event.returnValue = false;
    }
    return false;
}
function apriCanali() { 
	var obj;
	obj=document.formcanali.canali;
	document.location.href=obj.options[obj.selectedIndex].value;
}