var IWIDTH=250  // Tip box width
var ns4         // Are we using Netscape4?
var ie4         // Are we using Internet Explorer Version 4?
var ie5         // Are we using Internet Explorer Version 5 and up?
var kon         // Are we using KDE Konqueror?
var x,y,winW,winH  // Current help position and main window size
var idiv=null   // Pointer to infodiv container
var px="px"     // position suffix with "px" in some cases

function nsfix(){setTimeout("window.onresize = rebrowse", 2000);}

function rebrowse(){window.location.reload();}

function hascss(){ return gettip('infodiv')?true:false }

function infoinit(){
 ns4=(document.layers)?true:false, ie4=(document.all)?true:false;
 ie5=((ie4)&&((navigator.userAgent.indexOf('MSIE 5')>0)||(navigator.userAgent.indexOf('MSIE 6')>0)))?true:false;
 kon=(navigator.userAgent.indexOf('konqueror')>0)?true:false;
 x=0;y=0;winW=800;winH=600;
 idiv=null;
 document.onmousemove = mousemove;
 if(ns4&&document.captureEvents) document.captureEvents(Event.MOUSEMOVE);
 // Workaround for just another netscape bug: Fix browser confusion on resize
 // obviously conqueror has a similar problem :-(
 if(ns4||kon){ nsfix() }
 if(ns4) { px=""; }
}

function untip(){
 if(idiv) idiv.visibility=ns4?"hide":"hidden";
 idiv=null;
}

function gettip(name){return (document.layers&&document.layers[name])?document.layers[name]:(document.all&&document.all[name]&&document.all[name].style)?document.all[name].style:document[name]?document[name]:(document.getElementById(name)?document.getElementById(name).style:0);}

// Prepare tip boxes, but don't show them yet
function maketip(name,title,text){
 if(hascss()) document.write('<div id="'+name+'" name="'+name+'" style="position:absolute; visibility:hidden; z-index:20; top:0'+px+'; left:0'+px+';"><table width='+IWIDTH+' border=0 cellpadding=2 cellspacing=0 bgcolor="#333399"><tr><td class="tiptd"><table width="100%" border=0 cellpadding=0 cellspacing=0><tr><th><span class="ptt"><b><font color="#FFFFFF">'+title+'</font></b></span></th></tr></table><table width="100%" border=0 cellpadding=2 cellspacing=0 bgcolor="#CCCCFF"><tr><td><span class="pst"><font color="#000000">'+text+'</font></span></td></tr></table></td></tr></table></div>'+"\n");
}

function tip(name){
 if(hascss()){
  if(idiv) untip();
  idiv=gettip(name);
  if(idiv){
   winW=(window.innerWidth)? window.innerWidth+window.pageXOffset-16:document.body.offsetWidth-20;
   winH=(window.innerHeight)?window.innerHeight+window.pageYOffset  :document.body.offsetHeight;
   if(x<=0||y<=0){ // konqueror can't get mouse position
    x=(winW-IWIDTH)/2+(window.pageXOffset?window.pageXOffset:0); y=(winH-50)/2+(window.pageYOffset?window.pageYOffset:0); // middle of window
   }
   showtip();
  }
 }
}

function showtip(){
  idiv.left=(((x+260)<winW)?x+12:x-255)+px; idiv.top=(((y+90)<winH)?y+12:y-90)+px;
  idiv.visibility=ns4?"show":"visible";
//  window.status="idiv="+idiv+"X:"+(idiv.left?idiv.left:"NAN")+", Y:"+(idiv.top?idiv.top:"NAN")+", x:"+x+", y:"+y;
}

function mousemove(e){
 if(e)   {x=e.pageX?e.pageX:e.clientX?e.clientX:0; y=e.pageY?e.pageY:e.clientY?e.clientY:0;}
 else if(event) {x=event.clientX; y=event.clientY;}
 else {x=0; y=0;}
 if(document.documentElement) // Workaround for scroll offset of IE
  {
    x+=document.documentElement.scrollLeft;
    y+=document.documentElement.scrollTop;
  }
 if(idiv) showtip();
}
//


measureUnit = "px"

minSize = 1;
minStyleSize = 10;
maxSize = 6;
maxStyleSize = 30;
startSize = 1;
startStyleSize = 10;
stepSize = 1;
stepStyleSize = 2;
var keyin = 61;
var keyinCAPS = 43;
var keyout = 45;
var keyoutCAPS = 95;
var keyinIe = 61;
var keyinIeCAPS = 43;
var keyoutIe = 45;
var keyoutIeCAPS = 95;
var zoomFactor = 1.1;
var maxZoom = 4.096;
var minZoom = 0.625;
var startDecZoom = 0.7;
var startIncZoom = 1.3;
userExpiry = 365 * 24 * 60 * 60 * 1000;
alertEnabled = false;
allowInputResize = false;
function setCookie(name, value, expires, path, domain, secure) {
  document.cookie = "Enabled=true";
  var cookieValid = document.cookie;
  if (cookieValid.indexOf("Enabled=true") != -1) {
    var curCookie = name + "=" + escape(value) +
        ((expires) ? "; expires=" + expires.toGMTString() : "") +
        ((path) ? "; path=" + path : "") +
        ((domain) ? "; domain=" + domain : "") +
        ((secure) ? "; secure" : "");

    document.cookie = curCookie;
    return(true);
  }
  else {
    return(false);
  }
}
function getCookie(name) {
  var dc = document.cookie;
  var prefix = name + "=";
  var begin = dc.indexOf("; " + prefix);
  if (begin == -1) {
    begin = dc.indexOf(prefix);
    if (begin != 0) return null;
  } else
    begin += 2;
  var end = document.cookie.indexOf(";", begin);
  if (end == -1)
    end = dc.length;
  return unescape(dc.substring(begin + prefix.length, end));
}
function deleteCookie(name, path, domain) {
  if (getCookie(name)) {
    document.cookie = name + "=" + 
    ((path) ? "; path=" + path : "") +
    ((domain) ? "; domain=" + domain : "") +
    "; expires=Thu, 01-Jan-70 00:00:01 GMT";
  }
}
function fixDate(date) {
  var base = new Date(0);
  var skew = base.getTime();
  if (skew > 0)
    date.setTime(date.getTime() - skew);
}

function searchTags(childTree, level) {
  var retArray = new Array();
  var tmpArray = new Array();
  var j = 0;
  var childName = "";
  for (var i=0; i<childTree.length; i++) {
    childName = childTree[i].nodeName;
    if (childTree[i].hasChildNodes()) {
      if ((childTree[i].childNodes.length == 1) && (childTree[i].childNodes[0].nodeName == "#text"))
        retArray[j++] = childTree[i];
      else {
        tmpArray = searchTags(childTree[i].childNodes, level+1);
        for (var k=0;k<tmpArray.length; k++)
          retArray[j++] = tmpArray[k];
        retArray[j++] = childTree[i];
      }
    }
    else
      retArray[j++] = childTree[i];
  }
  return(retArray);
}

function changeFontSize(stepSize, stepStyleSize, useCookie) {

  if (document.body) {
    var myObj = searchTags(document.body.childNodes, 0);
    var myCookieSize = parseInt(getCookie("incrSize"));
    var myCookieStyleSize = parseInt(getCookie("incrStyleSize"));
    var myStepSize = stepSize;
    var myStepStyleSize = stepStyleSize;
    var now = new Date();
    fixDate(now);

    if (isNaN(myCookieSize)) myCookieSize = 0;
    if (isNaN(myCookieStyleSize)) myCookieStyleSize = 0;
    if (useCookie) {
      myStepSize = myCookieSize;
      myStepStyleSize = myCookieStyleSize;
    }

    now.setTime(now.getTime() + userExpiry);

    myObjNumChilds = myObj.length;
    for (i=0; i<myObjNumChilds; i++) {
      myObjName = myObj[i].nodeName;
      if (myObjName != "#text" && myObjName != "HTML" &&
          myObjName != "HEAD" && myObjName != "TITLE" &&
          myObjName != "STYLE" && myObjName != "SCRIPT" &&
          myObjName != "BR" && myObjName != "TBODY" &&
          myObjName != "#comment" && myObjName != "FORM") {
        if (!allowInputResize && myObjName == "INPUT") continue;

        size = parseInt(myObj[i].getAttribute("size"));
        if (myObj[i].currentStyle)
          styleSize = parseInt(myObj[i].currentStyle.fontSize);
        else 
          styleSize = parseInt(window.getComputedStyle(myObj[i], null).fontSize);
        if (isNaN(size) || (size < minSize) || (size > maxSize))
          size = startSize;

        if (isNaN(styleSize) || (styleSize < minStyleSize) || (styleSize > maxStyleSize))
          styleSize = startStyleSize;

        if ( ((size > minSize) && (size < maxSize)) || 
             ((size == minSize) && (stepSize > 0)) || 
             ((size == maxSize) && (stepSize < 0)) || useCookie) {
          myObj[i].setAttribute("size", size+myStepSize);
        }

        if ( ((styleSize > minStyleSize) && (styleSize < maxStyleSize)) || 
             ((styleSize == minStyleSize) && (stepStyleSize > 0)) ||
             ((styleSize == maxStyleSize) && (stepStyleSize < 0)) || useCookie) {
          newStyleSize = styleSize+myStepStyleSize;
          myObj[i].style.fontSize = newStyleSize+measureUnit;
        }
      } 
    } 
    if (!useCookie) {
      cookieIsSet = setCookie("incrSize", myStepSize+myCookieSize, now);
      cookieIsSet = setCookie("incrStyleSize", myStepStyleSize+myCookieStyleSize, now);
      if (alertEnabled && !cookieIsSet) {
        alert("Per mantenere in memoria la dimensione scelta, abilita i cookie nel browser");
      }
    }

  } 
} 

function increaseFontSize() {
  if (document.body) {
    changeFontSize(stepSize, stepStyleSize, false);
  }
  else {
    if (alertEnabled) {
      alert("Spiacente, il tuo browser non supporta questa funzione");
    }
  }
}

function decreaseFontSize() {
  if (document.body) {
    myStepSize = -stepSize;
    myStepStyleSize = -stepStyleSize;
    changeFontSize(myStepSize, myStepStyleSize, false);
  }
  else {
    if (alertEnabled) {
      alert("Spiacente, il tuo browser non supporta questa funzione");
    }
  }
}

function smartin() {
  if (window.parent.document.body.style.zoom < maxZoom) {
    if (window.parent.document.body.style.zoom > 0) {
      window.parent.document.body.style.zoom *= zoomFactor; 
    }
    else { 
      window.parent.document.body.style.zoom = startIncZoom;
    }
  }
  else {
    if (alertEnabled) {
      alert("Warning: Max size reached");
    }
  }
}

function smartout() {
  if ( (window.parent.document.body.style.zoom > minZoom) ||
       (window.parent.document.body.style.zoom == 0) ) {
    if (window.parent.document.body.style.zoom > 0) {
      window.parent.document.body.style.zoom /= zoomFactor; 
    }
    else {
      window.parent.document.body.style.zoom = startDecZoom;
    }
  }
  else {
    if (alertEnabled) {
      alert("Warning: Min size reached");
    }
  }
}

function smartzoom(e) {

  if (document.all) {
    myEvent = event.keyCode;
  }
  else {
    myEvent = e.which;
  }

  switch(myEvent) {
    case keyinIe:
    case keyinIeCAPS:
      smartin();
      break;

    case keyoutIe:
    case keyoutIeCAPS:
      smartout();
      break;

    case keyin:
    case keyinCAPS:
      increaseFontSize();
      break;

    case keyout:
    case keyoutCAPS:
      decreaseFontSize();
      break;

    default:
      break;
  }
}

if (document.layers) {
  document.captureEvents(Event.KEYPRESS);
}

document.onkeypress = smartzoom;