var cnnTextClasses = new Array ('cnnSmaller','cnnNormal','cnnLarger');
var cnnCurrentTextIndex = 1;
function cnnChangeTextSize(delta) {
	var storyTextArea = document.getElementById('content-area');
	if (storyTextArea) {
		cnnCurrentTextIndex = cnnCurrentTextIndex + delta;
		if (cnnCurrentTextIndex < 0) { cnnCurrentTextIndex = 0;}
		else if (cnnCurrentTextIndex >= cnnTextClasses.length) {
			cnnCurrentTextIndex = cnnTextClasses.length - 1;
		}
		storyTextArea.className = cnnTextClasses[cnnCurrentTextIndex] + ' cnnClear';
	}
}