/* 

	Easy Scroll v1.0
	written by Alen Grakalic, provided by Css Globe (cssglobe.com)
	please visit http://cssglobe.com/post/1495/easy-scroll-accessible-content-scroller
	
*/

function easyscroll(){
	
	// id of the container element 
	var id = "myContent";
	
	// navigation buttons text
	//var nav = ["Scroll Up", "Scroll Down", "Reset"];
	
	//	id for each navigation button (OPTIONAL)
	//var navId = ["btnUp", "btnDown", "btnReset"];

	// movement speed
	var speed = 5;
	
	// desired height of the container element (in pixels)
	var height = 355;
	
	//
	// END CONFIG
	// do not edit below this line (unless you want to of course :) )
	//

	var obj = document.getElementById(id);
	
	obj.up = false;
	obj.down = false;
	obj.fast = false;

	//var container = document.createElement("div");
	//var parent = obj.parentNode;
	//container.id="easyscroll";
	//parent.insertBefore(container,obj);
	//parent.removeChild(obj);	
	
	//container.style.position = "relative";
	//container.style.height = height + "px";
	//container.style.overflow = "hidden";
	//obj.style.position = "absolute";
	//obj.style.top = "0";
	//obj.style.left = "0";
	//container.appendChild(obj);
	/*
	var btns = new Array();
	var ul = document.createElement("ul");
	ul.id="easyscrollnav";
	for (var i=0;i<nav.length;i++){
		var li = document.createElement("li");
		li.innerHTML = nav[i];
		li.id = navId[i];
		btns.push(li);
		ul.appendChild(li);
	};
	
	parent.insertBefore(ul,container);
	*/
	document.getElementById("btnUp").onmouseover = function(){
		obj.up = true;
		//this.className = "over";
	};
	document.getElementById("btnUp").onmouseout = function(){
		obj.up = false;
		//this.className = "";
	};		
	document.getElementById("btnDown").onmouseover = function(){
		obj.down = true;
		//this.className = "over";
	};
	document.getElementById("btnDown").onmouseout = function(){
		obj.down = false;
		//this.className = "";
	};		
	document.getElementById("btnUp").onmousedown = document.getElementById("btnDown").onmousedown = function(){
		obj.fast = true;
	};	
	document.getElementById("btnUp").onmouseup = document.getElementById("btnDown").onmouseup = function(){
		obj.fast = false;
	};		
	//document.getElementById("btnReset").onmouseover = function(){ 		
		//this.className = "over";
	//};	
	//document.getElementById("btnReset").onmouseout = function(){ 		
		//this.className = "";
	//};		
	//document.getElementById("btnReset").onclick = function(){ 		
		//obj.style.top = "0px";
	//};		
		
	this.start = function(){
		var newTop;
		var objHeight = obj.offsetHeight;
		var top = obj.offsetTop;
		var fast = (obj.fast) ? 2 : 1;
		if(obj.down){		 
			newTop = ((objHeight+top) > height) ? top-(speed*fast) : top;	
			obj.style.top = newTop + "px";
		};	
		if(obj.up){		 
			newTop = (top < 0) ? top+(speed*fast) : top;
			obj.style.top = newTop + "px";
		};
	};	
	obj.interval = setInterval("start()",50);	
};


//
// script initiates on page load. 
//
/*
this.addEvent = function(obj,type,fn){
	if(obj.attachEvent){
		obj['e'+type+fn] = fn;
		obj[type+fn] = function(){obj['e'+type+fn](window.event );}
		obj.attachEvent('on'+type, obj[type+fn]);
	} else {
		obj.addEventListener(type,fn,false);
	};
};
addEvent(window,"load",easyscroll);*/