// Add styling to all required input form elements
function setRequiredLabels()
{
	var css;
	// Modify text of all required labels
	elements = document.getElementsByTagName('span');
	for (var i=0; i<elements.length; i++) {
		if ((elements[i].className != null) && (elements[i].innerHTML != null)) {
			// Get all CSS classes for element
			css = elements[i].className.split(' ');
			// Update text only for elements with a 'required' class
			if (css.find('required')) {
				elements[i].innerHTML = '*' + elements[i].innerHTML;
			}
  	    }
	} // for
}