/***************************************************************************
*   copyright            : (C) 2001,2002 Advanced Internet Designs Inc.
*   email                : forum@prohost.org
*
*   $Id: lib.js,v 1.1.1.1 2002/06/17 23:00:09 hackie Exp $
****************************************************************************
          
****************************************************************************
*
*	This program is free software; you can redistribute it and/or modify
*	it under the terms of the GNU General Public License as published by
*	the Free Software Foundation; either version 2 of the License, or
*	(at your option) any later version.
*
***************************************************************************/

JS_HELPOFF = false;
/* indentify the browser */
DOM = (document.getElementById) ? 1 : 0;
NS4 = (document.layers) ? 1 : 0;
IE4 = (document.all) ? 1 : 0;
OPERA = (navigator.userAgent.indexOf("Opera 5") > -1 || navigator.userAgent.indexOf("Opera/5") > -1 || navigator.userAgent.indexOf("Opera 6") > -1 || navigator.userAgent.indexOf("Opera/6") > -1) ? 1 : 0;

/* edit box stuff */
function insertTag(obj, stag, etag)
{

	if ( navigator.userAgent.indexOf("MSIE") > -1 && !OPERA ) {
		insertTagIE(obj, stag, etag);
	}
	else {
		insertTagNS(obj, stag, etag);	
	}
}

function insertTagNS(obj, stag, etag)
{
	obj.value = obj.value+stag+etag;	
}

function insertTagIE(obj, stag, etag)
{
	r=document.selection.createRange();
	if( document.selection.type == 'Text' && (obj.value.indexOf(r.text) != -1) ) {
		a = r.text;
		r.text = stag+r.text+etag;
		if ( obj.value.indexOf(document.selection.createRange().text) == -1 ) {
			document.selection.createRange().text = a;
		}
	}
	else insertAtCaret(obj, stag+etag);	
}

function dialogTag(obj, qst, def, stag, etag)
{
var q;
	q = prompt(qst, def);
	if ( !q ) return;
	stag = stag.replace(/%s/i, q);
	insertTag(obj, stag, etag);
}


function url_insert()
{
	if ( check_selection() )
		dialogTag(document.post_form.post_text, 'Location:', 'http://', '[url=%s]', '[/url]');
	else
		dialogTag(document.post_form.post_text, 'Location:', 'http://', '[url]%s[/url]', '');
}
/*
 function url_insert()    {
  var b=window.prompt("Scrivi in testo per l'indirizzo","");
  if(b==null) { document.all.post_text.focus(); return; }
  var a=window.prompt("Scrivi l'indirizzo","");
  if(a==null) { document.all.post_text.focus(); return; }
  document.all.post_text.value = document.all.post_text.value + "<a href="+a+">" + b + "</a>";
 }
*/
function check_selection()
{
var rn;
var sel;

	if ( document.layers ) return 0;
	if ( navigator.userAgent.indexOf("MSIE") < 0 ) return 0;

	r = document.selection.createRange();

	if ( r.text.length && (document.post_form.post_text.value.indexOf(r.text) != -1) ) {
		a = document.selection.createRange().text;
		rn = Math.random();
		r.text = r.text + ' ' + rn;
		
		if ( document.post_form.post_text.value.indexOf(rn) != -1 ) {
			sel = 1;
		} else {
			sel = 0;
		}
		
		document.selection.createRange().text = a;
	}
	
	return sel;
}

function storeCaret(textEl)
{
	 if (textEl.createTextRange) textEl.caretPos = document.selection.createRange().duplicate();
}

function insertAtCaret(textEl, text)
{
	if (textEl.createTextRange && textEl.caretPos)
	{
		var caretPos = textEl.caretPos;
		caretPos.text = caretPos.text.charAt(caretPos.text.length - 1) == ' ' ? text + ' ' : text;
	}
	else 
		textEl.value  =  textEl.value + text;
}
/*
function email_insert()
{
	if ( check_selection() ) {
		dialogTag(document.post_form.post_text, 'Email:', '', '[url=mailto:%s]', '[/url]');
	}	
	else
		dialogTag(document.post_form.post_text, 'Email:', '', '[email]%s[/email]', '');
}
*/
 function email_insert()    {
  var b=window.prompt("Scrivi in testo per l'indirizzo email","");
  if(b==null) { document.all.post_text.focus(); return; }
  var a=window.prompt("Scrivi l'indirizzo email","");
  if(a==null) { document.all.post_text.focus(); return; }
  document.all.post_text.value = document.all.post_text.value + "<a href=mailto:"+a+">" + b + "</a>";
 }


function image_insert()
{
	dialogTag(document.post_form.post_text, 'Image URL:', 'http://', '[img]%s[/img]', '');
}

function insertParentTagIE(stag, etag)
{
	r=window.opener.document.selection.createRange();
	obj = window.opener.document.post_form.post_text;
	
	if( window.opener.document.selection.type == 'Text' && (obj.value.indexOf(r.text) != -1) ) {
		a = r.text;
		r.text = stag+r.text+etag;
		if ( obj.value.indexOf(window.opener.document.selection.createRange().text) == -1 ) {
			window.opener.document.selection.createRange().text = a;
		}
	}
	else insertAtCaret(obj, stag+etag);
}

function insertParentTagNS(stag, etag)
{
	window.opener.document.post_form.post_text.value = window.opener.document.post_form.post_text.value + stag + etag;
}

function insertParentTag(stag, etag)
{
	if ( document.all ) 
		insertParentTagIE(stag, etag);
	else
		insertParentTagNS(stag, etag);
	
}

function window_open(url,winName,width,height)
{
	xpos = (screen.width-width)/2;
	ypos = (screen.height-height)/2;
	options = "scrollbars=1,width="+width+",height="+height+",left="+xpos+",top="+ypos+"position:absolute";
	window.open(url,winName,options);
}

function layerVis(layer,on)
{
        if (on) {
		if (DOM)
			document.getElementById(layer).style.visibility = "visible";
		else if (NS4)
			document.layers[layer].visibility = "show";
		else if (IE4)
			document.all[layer].style.visibility = "visible";
	} else {
		if (DOM)
			document.getElementById(layer).style.visibility = "hidden";
		else if (NS4)
			document.layers[layer].visibility = "hide";
		else if (IE4)
			document.all[layer].style.visibility = "hidden";
	}
}

/*
	This script (c) 2000 Ivanopulo / DAMN -- http://www.damn.to
	You're free to use it, but please leave this message intact if you do it.
	
	Thanks alot to Marek for making this script NN6 compatible
	
	NN6 notice: It's *very* slow when it comes to timers, and it's an understatement!)
	
	Opera notice: Opera can identify itself as any browser, depending on value chosen
	in Preferences / Connections / Browser identification. This script assumes that it
	identifies itself as Opera. I dare not say it's a bold assumption, but it's default
	is MSIE 5. Go figure.
*/
function getElementsByClass(searchClass,node,tag) {
    var classElements = new Array();
    if ( node == null )
        node = document;
    if ( tag == null )
        tag = '*';
    var els = node.getElementsByTagName(tag);
    var elsLen = els.length;
    var pattern = new RegExp("(^|\\s)"+searchClass+"(\\s|$)");
    for (i = 0, j = 0; i < elsLen; i++) {
        if ( pattern.test(els[i].className) ) {
            classElements[j] = els[i];
            j++;
        }
    }
    return classElements;
}

function checkSigne() {
	signe = getElementsByClass("signa",document,'div');
	for (i=0;i<signe.length;i++){
	    if (signe[i].clientWidth>500 || signe[i].clientHeight>500 ) {
		while (signe[i].hasChildNodes()) { signe[i].removeChild(signe[i].firstChild); }
		warn = document.createElement("span");
		warn.className="signfuorinorma";
		warn.appendChild(document.createTextNode("Signature rimossa: dimensioni troppo grandi."));
		signe[i].appendChild(warn);
	    }
	}
}