var SpecialCharacterHandler = {
    init : function()
    {

        var titles = document.querySelectorAll('h1, h2, h3, h4, h5');

        var titlesLength = titles.length;

        for(var i = 0; i < titlesLength; i++){
            var title = titles[i];
            titleContent = title.innerHTML;
            titleContent = titleContent.replace(/€/g, '<span class="euro-sign">€</span>');
            title.innerHTML = titleContent;
        }
    },
};

SpecialCharacterHandler.init();