/* Dropdown nav */
function toggle_dropdown() {
	for (var i = 0; i < this.childNodes.length; i ++) {
		if (this.childNodes.item(i).nodeName == "UL") {							
			this.childNodes.item(i).style.display = 
				(this.childNodes.item(i).style.display != "block") 
				? "block" 
				: "none";
			break;            
        }		
    }	
}
function init_dropdowns() {
	//var list_collection = document.getElementsByTagName("li");
	var list_collection = document.getElementById("nav").getElementsByTagName("li");

	for (var i = 0; i < list_collection.length; i ++) {        
		for (var j = 0; j < list_collection[i].childNodes.length; j ++) {
			if (list_collection[i].childNodes.item(j).nodeName == "UL") {
				list_collection[i].onmouseover	= toggle_dropdown;
				list_collection[i].onmouseout	= toggle_dropdown;
            }
        }
    }
}

/* text size */
var text_sizes  = new Array("10px","11px","12px","14px","16px","18px");
var text_index  = 1;
function text_smaller() {
    if (text_index) {
        text_index --;
        document.getElementById("story").style.fontSize = text_sizes[text_index];
    } else {
        alert("The text size cannot be decreased any smaller.");
    }
}
function text_larger() {
    if (text_index < text_sizes.length - 1) {
        text_index ++
        document.getElementById("story").style.fontSize = text_sizes[text_index];
    } else {
        alert("The text size cannot be increased any larger.");
    }
}