function newwin(url,nome,larghezza,altezza) {
   finestra = window.open(url,nome,"toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=0,width="+larghezza+",height="+altezza);
   return false;
}

function SetTargetBlank()
{
	if(document.getElementsByTagName)
	{
		var i;
		var msg = " (apre collegamento in una nuova finestra)";
		var links = document.getElementsByTagName("a");
		for (i = 0; i < links.length; i++)
		{
			var link = links[i];
			if (link.className.indexOf("targetBlank") != -1)
			{
				link.title += msg;
				var fn = function()
				{
					window.open(this.href);
					return false;
				}
				link.onclick = fn;
				link.onkeypress = fn;
			}
		}
	}
}

function showimage(elemento, immagine) {
   elemento.src = immagine;
}

function ShowHide(Elemento)
{
   o = document.getElementById(Elemento);
   if (o.style.display=='block')
      {o.style.display='none';}
   else
      {o.style.display='block';}
   return false;
}

function centreWinPopUp(pageFile, popUpName, w, h, scroll, resize) 
{
	var winLeft = (screen.width - w) / 2;
	var winTop = (screen.height - h) / 2;
	winProperties = 'height='+h+',width='+w+',top='+winTop+',left='+winLeft+',scrollbars='+scroll+',toolbar=no,resizable='+resize+',status=no'
	if (!window.winPopUp)
	   {winPopUp = window.open(pageFile, popUpName, winProperties)}
	else
	{
		if (!winPopUp.closed)
		   {winPopUp.focus();}
		else
		   {winPopUp = window.open(pageFile, popUpName, winProperties)}
	}	
}

function correctPNG() {
   for(var i=0; i<document.images.length; i++) {
      var img = document.images[i]
      var imgName = img.src.toUpperCase()
      if (imgName.substring(imgName.length-3, imgName.length) == "PNG")
      {
         var imgID = (img.id) ? "id='" + img.id + "' " : ""
         var imgClass = (img.className) ? "class='" + img.className + "' " : ""
         var imgTitle = (img.title) ? "title='" + img.title + "' " : "title='" + img.alt + "' "
         var imgStyle = "display:inline-block;" + img.style.cssText 
         if (img.align == "left") imgStyle = "float:left;" + imgStyle
         if (img.align == "right") imgStyle = "float:right;" + imgStyle
         if (img.parentElement.href) imgStyle = "cursor:hand;" + imgStyle  
         var strNewHTML = "<span " + imgID + imgClass + imgTitle + " style=\"" + "width:" + img.width + "px; height:" + img.height + "px;" + imgStyle + ";" + "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader" + "(src=\'" + img.src + "\', sizingMethod='scale');\"><\/span>"
         img.outerHTML = strNewHTML
         i = i-1
      }
   }
}
// window.attachEvent("onload", correctPNG); //

function increaseFontSize(selector) {
   var list = getElementsBySelector(selector);
   for (j=0; list[j]; j++) {
      if(list[j].style.fontSize) {
         var s = parseInt(list[j].style.fontSize.replace("px",""));
      } else {
         var s = 12;
      }
      if(s!=FontSizeMax) {
         s += 1;
      }
      list[j].style.fontSize = s+"px"
   }
}
function decreaseFontSize(selector) {
   var list = getElementsBySelector(selector);
   for (j=0; list[j]; j++) {
      if(list[j].style.fontSize) {
         var s = parseInt(list[j].style.fontSize.replace("px",""));
      } else {
         var s = 12;
      }
      if(s!=FontSizeMin) {
         s -= 1;
      }
      list[j].style.fontSize = s+"px"
   }
}
// riferimento: simon.incutio.com/archive/2003/03/25/getElementsBySelector
function getElementsBySelector(selector) {
// Attempt to fail gracefully in lesser browsers
  if (!document.getElementsByTagName) {
    return new Array();
  }
  // Split selector in to tokens
  var tokens = selector.split(' ');
  var currentContext = new Array(document);
  for (var i = 0; i < tokens.length; i++) {
    token = tokens[i].replace(/^\s+/,'').replace(/\s+$/,'');;
    if (token.indexOf('#') > -1) {
      // Token is an ID selector
      var bits = token.split('#');
      var tagName = bits[0];
      var id = bits[1];
      var element = document.getElementById(id);
      if (tagName && element.nodeName.toLowerCase() != tagName) {
        // tag with that ID not found, return false
        return new Array();
      }
      // Set currentContext to contain just this element
      currentContext = new Array(element);
      continue; // Skip to next token
    }
    if (token.indexOf('.') > -1) {
      // Token contains a class selector
      var bits = token.split('.');
      var tagName = bits[0];
      var className = bits[1];
      if (!tagName) {
        tagName = '*';
      }
      // Get elements matching tag, filter them for class selector
      var found = new Array;
      var foundCount = 0;
      for (var h = 0; h < currentContext.length; h++) {
        var elements;
        if (tagName == '*') {
            elements = getAllChildren(currentContext[h]);
        } else {
            elements = currentContext[h].getElementsByTagName(tagName);
        }
        for (var j = 0; j < elements.length; j++) {
          found[foundCount++] = elements[j];
        }
      }
      currentContext = new Array;
      var currentContextIndex = 0;
      for (var k = 0; k < found.length; k++) {
        if (found[k].className && found[k].className.match(new RegExp('\\b'+className+'\\b'))) {
          currentContext[currentContextIndex++] = found[k];
        }
      }
      continue; // Skip to next token
    }
    // Code to deal with attribute selectors
    if (token.match(/^(\w*)\[(\w+)([=~\|\^\$\*]?)=?"?([^\]"]*)"?\]$/)) {
      var tagName = RegExp.$1;
      var attrName = RegExp.$2;
      var attrOperator = RegExp.$3;
      var attrValue = RegExp.$4;
      if (!tagName) {
        tagName = '*';
      }
      // Grab all of the tagName elements within current context
      var found = new Array;
      var foundCount = 0;
      for (var h = 0; h < currentContext.length; h++) {
        var elements;
        if (tagName == '*') {
            elements = getAllChildren(currentContext[h]);
        } else {
            elements = currentContext[h].getElementsByTagName(tagName);
        }
        for (var j = 0; j < elements.length; j++) {
          found[foundCount++] = elements[j];
        }
      }
      currentContext = new Array;
      var currentContextIndex = 0;
      var checkFunction; // This function will be used to filter the elements
      switch (attrOperator) {
        case '=': // Equality
          checkFunction = function(e) { return (e.getAttribute(attrName) == attrValue); };
          break;
        case '~': // Match one of space seperated words 
          checkFunction = function(e) { return (e.getAttribute(attrName).match(new RegExp('\\b'+attrValue+'\\b'))); };
          break;
        case '|': // Match start with value followed by optional hyphen
          checkFunction = function(e) { return (e.getAttribute(attrName).match(new RegExp('^'+attrValue+'-?'))); };
          break;
        case '^': // Match starts with value
          checkFunction = function(e) { return (e.getAttribute(attrName).indexOf(attrValue) == 0); };
          break;
        case '$': // Match ends with value - fails with "Warning" in Opera 7
          checkFunction = function(e) { return (e.getAttribute(attrName).lastIndexOf(attrValue) == e.getAttribute(attrName).length - attrValue.length); };
          break;
        case '*': // Match ends with value
          checkFunction = function(e) { return (e.getAttribute(attrName).indexOf(attrValue) > -1); };
          break;
        default :
          // Just test for existence of attribute
          checkFunction = function(e) { return e.getAttribute(attrName); };
      }
      currentContext = new Array;
      var currentContextIndex = 0;
      for (var k = 0; k < found.length; k++) {
        if (checkFunction(found[k])) {
          currentContext[currentContextIndex++] = found[k];
        }
      }
      // alert('Attribute Selector: '+tagName+' '+attrName+' '+attrOperator+' '+attrValue);
      continue; // Skip to next token
    }
    // If we get here, token is JUST an element (not a class or ID selector)
    tagName = token;
    var found = new Array;
    var foundCount = 0;
    for (var h = 0; h < currentContext.length; h++) {
      var elements = currentContext[h].getElementsByTagName(tagName);
      for (var j = 0; j < elements.length; j++) {
        found[foundCount++] = elements[j];
      }
    }
    currentContext = found;
  }
  return currentContext;
}