/*******************************************************************************
    
    Package: AFFIRMA XHTML/CSS Framework 1.0
    Title: Global JS Functions
    File: global.js.php
    Version: 1.0
    Date/Time: 2008-08-29 15:16
    Author name: Adal Hernandez Fraile
    Author organisation: AFFIRMA
    Author URI: www.affirma.nu
    Author contact details: <support@affirma.nu>
    Copyright: (c) 2008 Adal Hernandez Fraile // AFFIRMA
	License: Released under the MIT License:
    		http://www.opensource.org/licenses/mit-license.php
    Acknowledgements: none
    Description: Global JS functions for use at BobvanderVlist.com
    Dependencies: none
    Change history: change.log
    To-do list: todo.txt

*******************************************************************************/

greenHomeImgs = new Array();
blueHomeImgs = new Array();
prevGreenRndImgNum = null;
prevBlueRndImgNum = null;

blueHomeImgs[0] = 'Match-10.jpg';
blueHomeImgs[1] = '12.jpg';
blueHomeImgs[2] = '_MG_0369.jpg';
blueHomeImgs[3] = 'weekendschool-1.jpg';
blueHomeImgs[4] = 'Match-08.jpg';
blueHomeImgs[5] = 'De-Rode-Leeuw-1.jpg';
blueHomeImgs[6] = '2695-001.jpg';
blueHomeImgs[7] = 'ABCD-1.jpg';
blueHomeImgs[8] = '11.jpg';
blueHomeImgs[9] = 'Albeda-2.jpg';
greenHomeImgs[0] = '2710-003.jpg';
greenHomeImgs[1] = 'J.frerichs.jpg';
greenHomeImgs[2] = 'Match-04.jpg';
greenHomeImgs[3] = 'zoektocht.jpg';
greenHomeImgs[4] = 'Turks-supermarkt.jpg';
greenHomeImgs[5] = 'Postbode.jpg';
greenHomeImgs[6] = '9.jpg';
greenHomeImgs[7] = '5.jpg';
greenHomeImgs[8] = 'Match-05.jpg';

    
function swapRndImg(srcImg, targetImgType) {

	switch(targetImgType){
    	case 'green':rndNum = Math.ceil(Math.random()*greenHomeImgs.length-1);
        			if(rndNum==prevGreenRndImgNum) {
                    	rndNum = (rndNum+1<=greenHomeImgs.length-1)?rndNum+1:(rndNum-1>=0)?rndNum-1:0;
                    }
                    srcImg.src = 'http://www.bobvandervlist.com/dev/img/home/green/'+greenHomeImgs[rndNum];
                    prevGreenRndImgNum = rndNum;
                    break;
    	case 'blue':rndNum = Math.ceil(Math.random()*blueHomeImgs.length-1);
        			if(rndNum==prevBlueRndImgNum) {
                    	rndNum = (rndNum+1<=blueHomeImgs.length-1)?rndNum+1:(rndNum-1>=0)?rndNum-1:0;
                    }
                    srcImg.src = 'http://www.bobvandervlist.com/dev/img/home/blue/'+blueHomeImgs[rndNum];
                    prevBlueRndImgNum = rndNum;
        			break;
    }
}

function restoreImg(srcImg, targetImgSrc) {

	srcImg.src = targetImgSrc;
    
} 

function showPostComments(postId, uri, containerId, numOfComments) {

	document.getElementById(containerId).innerHTML = '<div class="num_of_comments">'+numOfComments+'</div><iframe src="'+uri+'"></iframe>';
    document.getElementById(containerId).style.height = (document.getElementById('post-'+postId).offsetHeight*0.8)+'px';
        
    return false;

}

function showCommentForm(postId, actionUri, redirectUri, authorName, authorEmail) {

	if(!document.getElementById('comment_form_wrapper')){
    	var commentFormWrapper = document.createElement('div');
      	commentFormWrapper.id = 'comment_form_wrapper';
        document.body.appendChild(commentFormWrapper);
    } else {
    	commentFormWrapper = document.getElementById('comment_form_wrapper');
    }
    
    commentFormWrapper.innerHTML = '';
    commentFormWrapper.innerHTML += '<div style="width: 100%; text-align: right;"><a href="'+redirectUri+'" onclick="return closeCommentForm();">afsluiten</a></div><div><strong>Plaats een reactie</strong></div><br /><form action="'+actionUri+'" method="post" id="comment_form" name="comment_form"><label for="author">Naam:</label>&nbsp;<input type="text" name="author" id="author" class="textarea" value="'+authorName+'" size="25" tabindex="1" /><br /><br /><label for="email">Email:</label>&nbsp;<input type="text" name="email" id="email" value="'+authorEmail+'" size="26" tabindex="2" /><br /><br /><label for="comment">Bericht:</label><br /><textarea name="comment" id="comment" cols="25" rows="7" tabindex="4"></textarea><br /><br /><input type="hidden" name="comment_post_ID" value="'+postId+'" /><input type="hidden" name="redirect_to" value="'+redirectUri+'" /><input name="reset" id="reset" type="reset" tabindex="5" value="Herstellen" /><input name="submit" id="submit" type="submit" tabindex="6" value="Verstuur reactie" onclick="return validateCommentForm();" /></form>';
    
    commentFormWrapper.style.top = findPos(document.getElementById('post_'+postId+'_comments_wrapper'))[1]-15+'px';
    commentFormWrapper.style.display = 'block';
    
    return false;

}

function makeMask(){

  if(!document.getElementById('mask')){
      var mask = document.createElement('div');
      mask.id = 'mask';
      var heights = [window.innerHeight, document.body.clientHeight, document.documentElement.offsetHeight];
      heights.sort(function(a, b){return b - a;});
      var h = heights[0];
      mask.style['height'] = h + 'px';
      document.body.appendChild(mask);
  } else {
  	  mask = document.getElementById('mask');
  }
  
  mask.style.display = 'block';
  
}

function closeCommentForm(){

	if(document.getElementById('comment_form_wrapper')){
   		document.getElementById('comment_form_wrapper').style.display='none';
    }
    if(document.getElementById('mask')){
    	document.getElementById('mask').style.display = 'none';
    }
    return false;

}

function validateCommentForm() {

	var commentForm = document.forms['comment_form'];

    if(commentForm.elements['author'].value == '') {
    	alert('Vul je naam in a.u.b.');
        return false;
    }
    if(commentForm.elements['email'].value == '') {
    	alert('Vul je email in a.u.b.');
    	return false;
    }
    if(commentForm.elements['comment'].value == '') {
    	alert('Vul een bericht in a.u.b.');
    	return false;
    }
    
    if(typeof(commentForm)!="undefined") commentForm.submit();
}

function findPos(obj) {
	var x = y = 0;
    var coordinates = new Array();

	if (obj.offsetParent) {

    	do {
    			x += obj.offsetLeft;
    			y += obj.offsetTop;
    
    	} while (obj = obj.offsetParent);
    }

    coordinates[0] = x;
    coordinates[1] = y;
	return coordinates;
}

function findDim(obj) {
	var w = h = 0;
    var dimensions = new Array();

	if (obj.offsetParent) {

    	do {
    			w += obj.offsetWidth;
    			h += obj.offsetHeight;
    
    	} while (obj = obj.offsetParent);
    }

    dimensions[0] = w;
    dimensions[1] = h;
	return dimensions;
}


/*******************************************************************************
	General Purpose Functions
*******************************************************************************/

/*
	Function to capitalize the first letter of each word in a string
    Parameters: none
    Returns: modified version of string
    Remarks: Adapted from: http://www.andyfowler.com/journal/2005/07/javascript-ucwords-replacement/
*/
String.prototype.ucWords = function(){
     return this.toLowerCase().replace(/\w+/g,function(s){
          return s.charAt(0).toUpperCase() + s.substr(1);
     })
};

/*
	Function to display an obfuscated mailto link to guard against spam robots
    Parameters:
    @addrCharCodes: string of comma-separated char codes to convert to human
    				readable chars
    @subject: e-mail subject, for use by e-mail client
    @title: string value for title property of mailto link
    @className: string value for class property of mailto link
    @innerHTML: string to display as maillink (innerHTML of a element)
    Returns: nothing
*/
function writeObfuscatedEmailLink(addrCharCodes, subject, title, className, innerHTML){
    addrCharCodes2 = addrCharCodes.split(',');
    emailAddr = '';
	for(i=0; i<addrCharCodes2.length; i++) emailAddr += String.fromCharCode(addrCharCodes2[i]);
	document.write('<a href="mailto:'+emailAddr+'?subject='+subject+'" title="'+title+'" class="'+className+'" rel="me">'+((innerHTML!='')?innerHTML:emailAddr)+'</a>');
}