/////////////////////// EXTERNAL LINK SCRIPT - references core.js  ///////////////////

// Adapted from www.phpBB-SEO.com SEO TOOLKIT

var extLink =
	{

		init: function() 
	
		{
	
		   
		   var current_domain = document.domain; 
		   
		   if (!current_domain || !document.getElementsByTagName) return;
		   
		   var aTag = new Array;
		   var aTagLength = 0;
		   var aTagInner = '';
		   
		   aTag = document.getElementsByTagName("a");
		   // Brings in each a tag to an array
		   aTagLength = aTag.length;
		   
		   for (var i = 0; i < aTagLength; i++) 
		   // Going through each item in the array up to the final one it has found
		   
			   {
					aTagInner = aTag[i].innerHTML.toLowerCase();
					// So that indexOf is able to read it and return a value
					
					if ( (aTag[i].href == '') || (aTag[i].href.indexOf('javascript') >=0 ) || (aTagInner.indexOf('<a') >= 0) || (aTag[i].href.indexOf(current_domain) >= 0) || (aTag[i].onclick != null) || (aTag[i].href.indexOf('mailto') >= 0))
						{
							continue;
						}
						// If any of these exceptions are met, the function will not be applied	

					
					// Otherwise, open a new window on mouse click...
					aTag[i].onclick = function () { window.open(this.href); return false; };
				
				}
		
		}
	
	};

Core.start(extLink);
// Using sitepoint.com structure via their core.js to stop the script running until html page is loaded




/////////////////////// CONTACT RELATED SCRIPTS ///////////////////




function emailDiv(divID_as_a_string) {
// for hiding email address from robots	
var part2 = "wingfinger.co.uk"
var at = "@"
var part1 = "pteri"
	var myReference = getRefToDiv(divID_as_a_string);
	if( !myReference ) { window.alert('Nothing works in this browser'); return; }
	if( myReference.innerHTML ) { myReference.innerHTML = (part1+at+part2); } else {
		if( myReference.document && myReference.document != window.document ) {
			myReference.document.open();
			myReference.document.write(part1+at+part2);
			myReference.document.close();
		} else {
			window.alert('Your browser does not allow the contents to be re-written.\nI have not implemented an iframe here.\nSee my generic re-writable elements example for how this should be done.'); return; }
    }
}



function linkDiv(divID_as_a_string) {
// for hiding address in mailto from robots	
var part2 = "wingfinger.co.uk"
var at = "@"
var part1 = "pteri"
	var myReference = getRefToDiv(divID_as_a_string);
	if( !myReference ) { window.alert('Nothing works in this browser'); return; }
	if( myReference.innerHTML ) { myReference.innerHTML = ('<a href="mailto:'+part1+at+part2+'">Email</a>'); } else {
		if( myReference.document && myReference.document != window.document ) {
			myReference.document.open();
			myReference.document.write('<a href="mailto:'+part1+at+part2+'">Email</a>');
			myReference.document.close();
		} else {
			window.alert('Your browser does not allow the contents to be re-written.\nI have not implemented an iframe here.\nSee my generic re-writable elements example for how this should be done.'); return; }
    }
}


function generate_address( part1, part2 ) {
// more email hiding
	var atsign = "&#64;";
	var addr = part1 + atsign + part2;
	document.write( "<" + "a" + " " + "href=" + "mail" + "to:" + addr + ">" +addr +"<\/a>");
}


function generate_email(part1, part2, linktext, x) {
// more email hiding
	var atsign = "&#64;";
	var addr = part1 + atsign + part2;
	document.write( "<a " + "href=" + "\"mail" + "to:" + addr + x +"\">" +linktext +"<\/a>");
}





////////////////////// BLENDER SCRIPTS /////////////////////

function blinit() {

blendImages('blender', 50, 5000);
} 

/*
 * Original from: http://brainerror.net/scripts/javascript/blendtrans/demo.html
 *
 * Edits by ASC:
 *   - Removed unnecessary OO code that caused MSIE to choke
 *   - Added pause between setting bg image and setting opacity to zero to
 *     prevent MSIE image flash
 *   - Increased opacity check argument to 103 for completely smooth fade
 *
 */

//find next image
function nextImage(o) {
    do o = o.nextSibling;
    while(o && o.tagName != 'IMG');
    return o;
}

//find first image inside an element
function firstChildImage(o) {
    
    o = o.firstChild;
        
    while(o && o.tagName != 'IMG') {
        o = o.nextSibling;
    }
    
    return o;
}

//set the opacity of an element to a specified value
function setOpacity(obj, o) {

    obj.style.opacity = (o / 100);
    obj.style.MozOpacity = (o / 100);
    obj.style.KhtmlOpacity = (o / 100);
    obj.style.filter = 'alpha(opacity=' + o + ')';
}

//make image invisible and set next one as current image
function getNextImage(image) {
	
    if (next = nextImage(image)) {
	image.style.display = 'none';
	image.style.zIndex = 0;

	next.style.display = 'block';
	next.style.zIndex = 100;

    } else {
	//if there is not a next image, get the first image again
	next = firstChildImage(image.parentNode);
    }

    return next;
}

//set default values for parameters and starting image
function blendImages(id, speed, pause, caption) {

    if(speed == null) {
        speed = 30;
    }
    
    if(pause == null) {
        pause = 1500;
    }

    var blend = document.getElementById(id);

    var image = firstChildImage(blend);

    startBlending(image, speed, pause, caption);
}

//make image a block-element and set the caption
function startBlending(image, speed, pause, caption) {

    image.style.display = 'block';

    if(caption != null) {
	document.getElementById(caption).innerHTML = image.alt;
    }

    continueFadeImage(image, 0, speed, pause, caption);
}

// ASC: copied from http://www.sean.co.uk/a/webdesign/javascriptdelay.shtm
function pausecomp(millis) {
    var date = new Date();
    var curDate = null;

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

//set an increased opacity and check if the image is done blending
function continueFadeImage(image, opacity, speed, pause, caption) {

    opacity = opacity + 3;

    if (opacity < 103) {

	setTimeout(function() {fadeImage(image, opacity, speed, pause, caption)}, speed);

    } else {
	//if the image is done, set it to the background and make it transparent
	image.parentNode.style.backgroundImage = "url("+image.src+")";

	// ASC: pause 1sec here to prevent MSIE image flash ...
	var paws=pause-1000;
	if (paws < 0 ) {
		paws = 0;
	}
	pausecomp(1000);

	setOpacity(image,0);
	//get the next image and start blending it again
	image = getNextImage(image);
	setTimeout(function() {startBlending(image, speed, pause, caption)}, paws);		
    }
}

//set the opacity to a new value and continue the fading
function fadeImage(image, opacity, speed, pause, caption) {
    setOpacity(image,opacity);
    continueFadeImage(image, opacity, speed, pause, caption);
}