function clearDefault(el) {
  if (el.defaultValue==el.value) el.value = ""
}
function jah(url,target) {
    // native XMLHttpRequest object
	document.getElementById(target).style.display = 'block';
	document.getElementById(target).style.visibility = 'visible';
    document.getElementById(target).innerHTML = '<h3>retrieving content ...</h3>';
    if (window.XMLHttpRequest) {
        req = new XMLHttpRequest();
        req.onreadystatechange = function() {jahDone(target);};
        req.open("GET", url, true);
        req.send(null);
    // IE/Windows ActiveX version
    } else if (window.ActiveXObject) {
        req = new ActiveXObject("Microsoft.XMLHTTP");
        if (req) {
            req.onreadystatechange = function() {jahDone(target);};
            req.open("GET", url, true);
            req.send();
        }
    }
}    

function jahDone(target) {
    // only if req is "loaded"
    if (req.readyState == 4) {
        // only if "OK"
        if (req.status == 200) {
            results = req.responseText;
            document.getElementById(target).innerHTML = results;
        } else {
            document.getElementById(target).innerHTML="error:\n" +
                req.statusText;
        }
    }
}

function pausecomp(millis)
{
date = new Date();
var curDate = null;

do { var curDate = new Date(); }
while(curDate-date < millis);
}

//fAJAXRequest
//
// client function for use in scripts
//
// parameters:
//
// sTargetID		= HTML ID of target DIV in which to dump returned data
// sURL				= URL to send request to
// sPost			= POST data to send, if "" then GET request is made (NOTE: GET may cache, this is a feature, not a bug!)
// sWait			= Text to display in target DIV whilst request is being made, "" = dont change current content
// sError			= Text to display in target DIV if error occurs, "" = dont change current content
//
function fAJAXRequest( sTargetID , sURL , sPost , sWait , sError )
{
	var e = document.getElementById( sTargetID );

	if( e )
	{
		if( sWait != "" )
			e.innerHTML = sWait;

		new oAJAXRequest( e , sURL , sPost , sError );
	}
}


// THE FOLLOWING ARE THE BACK END FUNCTIONS


// AJAX object state and response tracker function
//
// my server-scripts will always send back the first line as "200\n" if succesfull
//
// parameters:
//
// hAJAXRequest		= handle to request object
//
function fAJAXStateChange( hAJAXRequest )
{
	if( hAJAXRequest && hAJAXRequest.mRequest && hAJAXRequest.mRequest.readyState == 4 )
	{
		var s = hAJAXRequest.mRequest.responseText;
		//DEBUG: alert( s );

		if( hAJAXRequest.mRequest.status == "200" && s.substr(0,3) == "200" )
		{
			hAJAXRequest.mhTarget.innerHTML = s.substring(4);
		}
		else
		if( hAJAXRequest.msError != "" )
		{
			hAJAXRequest.mhTarget.innerHTML = hAJAXRequest.msError;
		}
	}
}

//fAJAXRequest
//
// client function for use in scripts
//
// parameters:
//
// sTargetID		= HTML ID of target DIV in which to dump returned data
// sURL				= URL to send request to
// sPost			= POST data to send, if "" then GET request is made (NOTE: GET may cache, this is a feature, not a bug!)
// sWait			= Text to display in target DIV whilst request is being made, "" = dont change current content
// sError			= Text to display in target DIV if error occurs, "" = dont change current content
//
function fAJAXRequest( sTargetID , sURL , sPost , sWait , sError )
{
	var e = document.getElementById( sTargetID );

	if( e )
	{
		if( sWait != "" )
			e.innerHTML = sWait;

		new oAJAXRequest( e , sURL , sPost , sError );
	}
}


// THE FOLLOWING ARE THE BACK END FUNCTIONS


// AJAX object state and response tracker function
//
// my server-scripts will always send back the first line as "200\n" if succesfull
//
// parameters:
//
// hAJAXRequest		= handle to request object
//
function fAJAXStateChange( hAJAXRequest )
{
	if( hAJAXRequest && hAJAXRequest.mRequest && hAJAXRequest.mRequest.readyState == 4 )
	{
		var s = hAJAXRequest.mRequest.responseText;
		//DEBUG: alert( s );

		if( hAJAXRequest.mRequest.status == "200" && s.substr(0,3) == "200" )
		{
			hAJAXRequest.mhTarget.innerHTML = s.substring(4);
		}
		else
		if( hAJAXRequest.msError != "" )
		{
			hAJAXRequest.mhTarget.innerHTML = hAJAXRequest.msError;
		}
	}
}

// AJAX object
//
// parameters:
//
// hTarget			= handle to target div (or whatever) we want to dump the returned HTML in
// sURL				= url to make request to
// sPost			= POST form data to send (leave as "" to make GET request)
// sError			= HTML to put in target div if request failed
//
// members:
//
// mRequest			= browser's own request object
// mhTarget			= hTarget
// msError			= sError
//
function oAJAXRequest( hTarget , sURL , sPost , sError )
{
	var me = this;
	this.mRequest	= null;
	this.mhTarget	= hTarget;
	this.msError	= sError;

	//do NOT use try{}catch as it is not supported in very old browsers and the script will not compile
	if( window.XMLHttpRequest )	//FF,NS,OP,IE7
	{
		this.mRequest = new XMLHttpRequest();
	}
	else
	if( window.ActiveXObject )	//IE5 & 6
	{
		this.mRequest = new ActiveXObject("Microsoft.XMLHTTP");
	}

	if( this.mRequest )
	{
		if( sPost != "" )
		{
			this.mRequest.open( 'POST', sURL , true );
			this.mRequest.setRequestHeader('Content-type','application/x-www-form-urlencoded');
			this.mRequest.onreadystatechange = function(){ fAJAXStateChange(me); };
			this.mRequest.send( sPost );
		}
		else
		{
			this.mRequest.open( 'GET', sURL , true );
			this.mRequest.onreadystatechange = function(){ fAJAXStateChange(me); };
			this.mRequest.send( null );
		}
	}
}

function esempio(str) {

        searchWin = window.open(str,'esempio','scrollbars=no,resizable=yes,width=600,height=600,status=no,location=no,toolbar=no');

//        searchWin.refer = self;

}
function vedivideo(str) {

        searchWin = window.open(str,'vedivideo','scrollbars=no,resizable=yes,width=425,height=264,status=no,location=no,toolbar=no');

//        searchWin.refer = self;

}

function mouseMove(ev)
{
	ev = ev || window.event;
	mousePos = mouseCoords(ev);
}
function mouseCoords(ev)
{
	if(ev.pageX || ev.pageY){
		return {x:ev.pageX, y:ev.pageY};
	}
	return {
		x:ev.clientX + document.body.scrollLeft - document.body.clientLeft,
		y:ev.clientY + document.body.scrollTop  - document.body.clientTop
	};
}

// The windowResize function keeps track of the window size for us
function windowResize( )
{
	winSize = {
		x: ( document.body.clientWidth ) ? document.body.clientWidth : window.innerWidth ,
		y: ( document.body.clientHeight ) ? document.body.clientHeight : window.innerHeight
	}
}

/****************************************************************************
* JavaScript Tool-Tips by lobo235 - www.netlobo.com
*
* This script allows you to add javascript tool-tips to your pages in a very
* unobtrusive manner. To learn more about using this script please visit
* http://www.netlobo.com/javascript_tooltips.html for usage examples.
****************************************************************************/

// Empty Variables to hold the mouse position and the window size
var mousePos = null;
var winSize = null;

// Set events to catch mouse position and window size
document.onmousemove = mouseMove;
window.onresize = windowResize;

// The mouseMove and mouseCoords function track the mouse position for us
function mouseMove(ev)
{
	ev = ev || window.event;
	mousePos = mouseCoords(ev);
}
function mouseCoords(ev)
{
	if(ev.pageX || ev.pageY){
		return {x:ev.pageX, y:ev.pageY};
	}
	return {
		x:ev.clientX + document.body.scrollLeft - document.body.clientLeft,
		y:ev.clientY + document.body.scrollTop  - document.body.clientTop
	};
}

// The windowResize function keeps track of the window size for us
function windowResize( )
{
	winSize = {
		x: ( document.body.clientWidth ) ? document.body.clientWidth : window.innerWidth ,
		y: ( document.body.clientHeight ) ? document.body.clientHeight : window.innerHeight
	}
}

// This function shows our tool-tips
function showTip( )
{
	var tip = document.getElementById('t'+this.id);
	tip.style.position = "absolute";
	var newTop = mousePos.y - tip.clientHeight - 10;
	var newLeft = mousePos.x - ( tip.clientWidth / 2 );
	if( newTop < 0 )
		newTop = mousePos.y + 20;
	if( newLeft < 0 )
		newLeft = 0;
	if( ( mousePos.x + ( tip.clientWidth / 2 ) ) >= winSize.x - 1 )
		newLeft = winSize.x - tip.clientWidth - 2;
	tip.style.top = newTop + "px";
	tip.style.left = newLeft + "px";
	tip.style.display = "block";
}

// This function moves the tool-tips when our mouse moves
function moveTip( )
{
	var tip = document.getElementById('t'+this.id);
	var newTop = mousePos.y - tip.clientHeight - 10;
	var newLeft = mousePos.x - ( tip.clientWidth / 2 );
	if( newTop < 0 )
		newTop = mousePos.y + 20;
	if( newLeft < 0 )
		newLeft = 0;
	if( ( mousePos.x + ( tip.clientWidth / 2 ) ) >= winSize.x - 1 )
		newLeft = winSize.x - tip.clientWidth - 2;
	tip.style.top = newTop + "px";
	tip.style.left = newLeft + "px";
}

// This function hides the tool-tips
function hideTip( )
{
	var tip = document.getElementById('t'+this.id);
	tip.style.display = "none";
}

// This function allows us to reference elements using their class attributes
document.getElementsByClassName = function(clsName){
	var retVal = new Array();
	var elements = document.getElementsByTagName("*");
	for(var i = 0;i < elements.length;i++){
		if(elements[i].className.indexOf(" ") >= 0){
			var classes = elements[i].className.split(" ");
			for(var j = 0;j < classes.length;j++){
				if(classes[j] == clsName)
					retVal.push(elements[i]);
			}
		}
		else if(elements[i].className == clsName)
		retVal.push(elements[i]);
	}
	return retVal;
}

// This is what runs when the page loads to set everything up
window.onload = function(){
	var ttips = document.getElementsByClassName('ttip');
	for( var i = 0; i < ttips.length; i++ )
	{
		ttips[i].onmouseover = showTip;
		ttips[i].onmouseout = hideTip;
		ttips[i].onmousemove = moveTip;
	}
	windowResize( );
}