$(document).ready(function() {
    //fontResize(4);
});

function fontResize(size) {
    $("p,span,h1,h2,h3,h4,td,li", $("td.content")).each(function(index, domElement) { fontResizeCallback(index, domElement, size); });
}

function fontResizeCallback(index, domElement, size) {
    //var fS = this.style.fontSize;
    var currentSize = $(domElement).css("font-size");
    if (currentSize != "") {
        currentSize = parseInt(currentSize.replace("px", ""));
        
        if (currentSize > 2) { currentSize += size; }
        $(domElement).css("font-size", currentSize + "px");
    }
}