Miscellany

function changeTabs(idNum) {  var classMatch = new RegExp("(^|\s)tab_(\d+(\s|$))");  var showtabs = new RegExp("(^|\s)tab_" + idNum + "(\s|$)");  var tag = "*";  var elementID = document.getElementById("storybox");	var elements = (tag == "*" && elementID.all)? elementID.all : elementID.getElementsByTagName(tag);	var tab_Classes = [];	var current;	var length = elements.length;	for(var i=0; i<length; i++){		current = elements[i];		if(classMatch.test(current)){			tab_Classes.push(current);		}	}  length = tab_Classes.length;	for(var i=0; i<length; i++){ 		current = tab_Classes[i];    if (showtabs.test(current.className)) {      current.style.display = 'block';    }    else {      current.style.display = 'none';    }  }}