var is = new Object()
is.ie = (document.all) ? 1:0
is.ns4 = (document.layers) ? 1:0
is.w3c = (document.getElementById && !is.ie) ? 1:0
is.win = (navigator.userAgent.toLowerCase().indexOf("win") > 0) ? 1:0
is.mac = (navigator.userAgent.toLowerCase().indexOf("mac") > 0) ? 1:0

var clientVer = parseInt(navigator.appVersion); // Get browser version

// Visar, respektive döljer, det lager som begärts.
function LayerControl(layer) {
	if (LayerCheckVisible(layer)) {
		LayerHide(layer);
	} else {
		LayerShow(layer);
	}
}

// Kollar om valt lager visas
function LayerCheckVisible(layer) {
	var vis;
	if (is.ie) {
		vis = document.all[layer].style.visibility == "visible" ? true : false;
	}
	if (is.ns4) {
		vis = document.controlls[layer].visibility == "show" ? true : false;
	}
	if (is.w3c) {
		vis = document.getElementById(layer).style.visibility == "visible" ? true : false;
	}
	return vis;
}

// Visa det lager som begärts
function LayerShow(layer) {
	if (document.all) {
		document.all[layer].style.visibility='visible';
	}
	if (document.layers) {
		document.layers[layer].visibility='visible';
	}
	if (document.getElementById) {
		document.getElementById(layer).style.visibility='visible';
	}
}

// Dölj det lager som begärts
function LayerHide(layer) {
	if (document.all) {
		document.all[layer].style.visibility='hidden';
	}
	if (document.layers) {
		document.layers[layer].visibility='hidden';
	}
	if (document.getElementById) {
		document.getElementById(layer).style.visibility='hidden';
	}
}

// Öppna popupfönster
function popUpRegular(page,width,height) {
	day = new Date();
	id = day.getTime();
	eval("page" + id + " = window.open(page, '" + id + "', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width=' + width + ',height=' + height + ',left=' + ((screen.width - width) / 2) + ',top=' + ((screen.height - height) / 2) + '');");
}

// Visa lexicon med valt ord
function popUpLexicon(entry) {
	day = new Date();
	id = day.getTime();
	eval("page" + id + " = window.open('/popups/lexicon.aspx?goto=' + entry, '" + id + "', 'toolbar=0,scrollbars=1,location=0,statusbar=0,menubar=0,resizable=0,width=400,height=400,left=700,top=200');");
}

// Funktion för att posta genom annan knapp än default (sök medlem tex.)
// -------------------------------------------------
function KeyDownHandler(e,btn)
{
	if(window.event) {
		// for IE, e.keyCode or window.event.keyCode can be used
		// process only the Enter key
		if (e.keyCode == 13)
		{
			// cancel the default submit
			e.returnValue=false;
			e.cancel = true;
			// submit the form by programmatically clicking the specified button
			btn.click();
		}
	}
	else if(e.which) {
		// netscape
		// process only the Enter key
		if (e.which == 13)
		{
			// cancel the default submit
			e.returnValue=false;
			e.cancel = true;
			// submit the form by programmatically clicking the specified button
			btn.click();
		}
	}
	else {
		// no event, so pass through
		return true;
	}
}

// Funktioner för att formatera text
// -------------------------------------------------
// bbCode control by
// subBlue design
// www.subBlue.com
bbcode = new Array();
bbtags = new Array('[b]','[/b]','[i]','[/i]','[u]','[/u]');

// From phpBB
function insertText(text, textbox, space) {
	var txtarea = document.getElementById(textbox);
	if (space == true) {text = ' ' + text + ' ';}
	if (txtarea.createTextRange && txtarea.caretPos) {
		var caretPos = txtarea.caretPos;
		caretPos.text = caretPos.text.charAt(caretPos.text.length - 1) == ' ' ? caretPos.text + text + ' ' : caretPos.text + text;
		txtarea.focus();
	} else {
		txtarea.value  += text;
		txtarea.focus();
	}
}

// From phpBB
function format(bbnumber, textbox) {
	var txtarea = document.getElementById(textbox);

	txtarea.focus();
	donotinsert = false;
	theSelection = false;
	bblast = 0;

	if (bbnumber == -1) { // Close all open tags
		while (bbcode[0]) {
			butnumber = arraypop(bbcode) - 1;
			txtarea.value += bbtags[butnumber + 1];
		}
		txtarea.focus();
		return;
	}

	if ((clientVer >= 4) && is.ie && is.win)
	{
		theSelection = document.selection.createRange().text; // Get text selection
		if (theSelection) {
			// Add tags around selection
			document.selection.createRange().text = bbtags[bbnumber] + theSelection + bbtags[bbnumber+1];
			txtarea.focus();
			theSelection = '';
			return;
		}
	}
	else if (txtarea.selectionEnd && (txtarea.selectionEnd - txtarea.selectionStart > 0))
	{
		mozWrap(txtarea, bbtags[bbnumber], bbtags[bbnumber+1]);
		return;
	}

	// Find last occurance of an open tag the same as the one just clicked
	for (i = 0; i < bbcode.length; i++) {
		if (bbcode[i] == bbnumber+1) {
			bblast = i;
			donotinsert = true;
		}
	}

	if (donotinsert) {		// Close all open tags up to the one just clicked & default button names
		while (bbcode[bblast]) {
				butnumber = arraypop(bbcode) - 1;
				txtarea.value += bbtags[butnumber + 1];
			}
			txtarea.focus();
			return;
	} else { // Open tags

		// Open tag
		txtarea.value += bbtags[bbnumber];
		if ((bbnumber == 14) && (imageTag == false)) imageTag = 1; // Check to stop additional tags after an unclosed image tag
		arraypush(bbcode,bbnumber+1);
		txtarea.focus();
		return;
	}
	storeCaret(txtarea);
}

// Replacement for arrayname.push(value) not implemented in IE until version 5.5
// Appends element to the array
function arraypush(thearray,value) {
	thearray[ getarraysize(thearray) ] = value;
}

// Replacement for arrayname.length property
function getarraysize(thearray) {
	for (i = 0; i < thearray.length; i++) {
		if ((thearray[i] == "undefined") || (thearray[i] == "") || (thearray[i] == null))
			return i;
		}
	return thearray.length;
}

// Replacement for arrayname.pop() not implemented in IE until version 5.5
// Removes and returns the last element of an array
function arraypop(thearray) {
	thearraysize = getarraysize(thearray);
	retval = thearray[thearraysize - 1];
	delete thearray[thearraysize - 1];
	return retval;
}

// From http://www.massless.org/mozedit/
function mozWrap(txtarea, open, close)
{
	var selLength = txtarea.textLength;
	var selStart = txtarea.selectionStart;
	var selEnd = txtarea.selectionEnd;
	if (selEnd == 1 || selEnd == 2)
		selEnd = selLength;

	var s1 = (txtarea.value).substring(0,selStart);
	var s2 = (txtarea.value).substring(selStart, selEnd)
	var s3 = (txtarea.value).substring(selEnd, selLength);
	txtarea.value = s1 + open + s2 + close + s3;
	return;
}

// Insert at Claret position. Code from
// http://www.faqts.com/knowledge_base/view.phtml/aid/1052/fid/130
function storeCaret(textEl) {
	if (textEl.createTextRange) textEl.caretPos = document.selection.createRange().duplicate();
}