var pos=-300;
var diffdime = 0;

var timer;

function cancella()
{
	setCookie('msg_channeltv', 'SI', 1);
	document.getElementById('io').style.visibility = 'hidden';
}

function getCookie( check_name )
{
	// first we'll split this cookie up into name/value pairs
	// note: document.cookie only returns name=value, not the other components
	var a_all_cookies = document.cookie.split( ';' );
	var a_temp_cookie = '';
	var cookie_name = '';
	var cookie_value = '';
	var b_cookie_found = false; // set boolean t/f default f

	for ( i = 0; i < a_all_cookies.length; i++ )
	{
		// now we'll split apart each name=value pair
		a_temp_cookie = a_all_cookies[i].split( '=' );


		// and trim left/right whitespace while we're at it
		cookie_name = a_temp_cookie[0].replace(/^\s+|\s+$/g, '');

		// if the extracted name matches passed check_name
		if ( cookie_name == check_name )
		{
			b_cookie_found = true;
			// we need to handle case where cookie has no value but exists (no = sign, that is):
			if ( a_temp_cookie.length > 1 )
			{
				cookie_value = unescape( a_temp_cookie[1].replace(/^\s+|\s+$/g, '') );
			}
			// note that in cases where cookie is initialized but no value, null is returned
			return cookie_value;
			break;
		}
		a_temp_cookie = null;
		cookie_name = '';
	}
	if ( !b_cookie_found )
	{
		return null;
	}
}

function setCookie( name, value, expires )
{
// set time, it's in milliseconds
var today = new Date();
today.setTime( today.getTime() );

/*
if the expires variable is set, make the correct
expires time, the current script below will set
it for x number of days, to make it for hours,
delete * 24, for minutes, delete * 60 * 24
*/
if ( expires )
{
expires = expires * 1000 * 60 * 60; // in ore
}
var expires_date = new Date( today.getTime() + (expires) );

document.cookie = name + "=" + escape( value ) + ";expires=" + expires_date.toGMTString() + ";path=/";
}


function riposiziona()
{
	var iebody=(document.compatMode && document.compatMode != "BackCompat")? document.documentElement : document.body

	var dsocleft=document.all? iebody.scrollLeft : pageXOffset
	var dsoctop=document.all? iebody.scrollTop : pageYOffset

	document.getElementById("io").style.top=parseInt(pos + dsoctop)+"px";
}

function scendi()
{
	var iebody=(document.compatMode && document.compatMode != "BackCompat")? document.documentElement : document.body

	var dsocleft=document.all? iebody.scrollLeft : pageXOffset
	var dsoctop=document.all? iebody.scrollTop : pageYOffset

	if (pos <= (70 - diffdime))
	{
		pos = pos + 1;
		document.getElementById("io").style.top = parseInt(pos + dsoctop) + "px";
	}
	else
	{
		clearInterval(timer)
	}
}

function checkCookie()
{
		if (getCookie('msg_channeltv') == "SI")
		{
			// Non mostrare per la prossima ora
		}
		else
		{
			//Mostrato
			document.write("<di" + "v class='drag' name='io' id='io' style='position:absolute; left:200px; top:-300px; z-index:9010; display:block; visibility:visible;'><img alt='' src='http://www.net-parade.it/images/vista_celeste.png' width='326' height='245' border='0' usemap='#MapNetP'><map name='MapNetP'><area shape='rect' coords='36,193,131,221' href='http://www.net-parade.it/cgi-bin/votazione.aspx?utente=channeltv' target='_blank' onclick=\"setCookie('msg_channeltv', 'SI', 1);\" style='cursor: hand;'><area shape='rect' coords='192,192,291,222' href='javascript:void(0);' onclick='cancella();' style='cursor: hand;'><area shape='rect' coords='275,1,321,21' href='javascript:void(0);' onclick='cancella();' style='cursor: hand;'></map></div>");
			
			diffdime = document.getElementById("io").offsetParent.offsetTop;
			pos = pos - diffdime;
			document.getElementById("io").style.top = pos + "px";
			timer = setInterval("scendi();", 5);
			addEvent(window, 'onscroll', riposiziona);
			
			window.onscroll = riposiziona;
		}
}

function addEvent(element, listener, handler)
{
	var flow = "add:";
	//if the system is not set up, set it up, and
	// store any outside script's event registration in the first handler slot
	if(typeof element[listener] != 'function' || 
	typeof element[listener + '_num'] == 'undefined'){
		flow += " 1a";
		element[listener + '_num'] = 0;
		if(typeof element[listener] == 'function'){
			flow += ", 1ai";
			element[listener + 0] = element[listener];
			element[listener + '_num']++;
		}else
			flow += ", 1aii";
		element[listener] = function(e){
			var r = true;
			e = (e) ? e : window.event;
			for(var i = 0; i < element[listener + '_num']; i++)
				if(element[listener + i](e) === false) r = false;
			return r;
		}
	}else
		flow += ", 1b";
	//assign handler
	for(var i = 0; i < element[listener + '_num']; i++)
		if(element[listener + i] == handler){
			flow += ", 2a";
			return flow;
		}
	flow += ", 2b";
	element[listener + element[listener + '_num']] = handler;
	element[listener + '_num']++;
	return flow;
}

		checkCookie();