function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      func();
      oldonload();
     }
  }
}

function moveElement(elementID,final_x,final_y,interval) {
	if (!document.getElementById) return false;
	if (!document.getElementById(elementID)) return false;
	var elem = document.getElementById(elementID);

	if (elem.movement) {
		clearTimeout(elem.movement);
	}
	if (!elem.style.left) {
		elem.style.left = "0px";
	}
	if (!elem.style.top) {
		elem.style.top = "0px";
	}

	var xpos = parseInt(elem.style.left);
	var ypos = parseInt(elem.style.top);

	if (xpos == final_x && ypos == final_y) {
		return true;
	}
	if (xpos < final_x) {
		var dist = Math.ceil((final_x - xpos));
		xpos = xpos + dist;
	}
	if (xpos > final_x) {
		var dist = Math.ceil((xpos - final_x));
		xpos = xpos - dist;
	}
	if (ypos < final_y) {
		var dist = Math.ceil((final_y - ypos));
		ypos = ypos + dist;
	}
	if (ypos > final_y) {
		var dist = Math.ceil((ypos - final_y));
		ypos = ypos - dist;
	}
	elem.style.left = xpos + "px";
	elem.style.top = ypos + "px";
	var repeat = "moveElement('"+elementID+"',"+final_x+","+final_y+","+interval+")";
	elem.movement = setTimeout(repeat,interval);
}

//Larghezza dei box della timeline
var box = 112;

function goBack(width_box){
	if(width_box) box = width_box;
	var boxes = document.getElementById("display").getElementsByTagName("div");
	browser = navigator.userAgent.toLowerCase();
	display_box = document.getElementById("display");

	// need to prevent clicking while move is happening
	position = parseInt(display_box.style.left);
	if (isNaN(position))
		position=0;

	back = position + box* 1;
	var remainder = position % box;
	//alert(back + " - " + remainder);
	if (back > 0 || remainder != 0){ return false; }

	moveElement("display",back,0,10);
	return false;
}

function goForward(minboxes,width_box){
	if (!minboxes) minboxes = 1;
	if(width_box) box=width_box;
	var boxes = document.getElementById("display").getElementsByTagName("div");
	var limit = ((boxes.length - (minboxes-1)) * box * - 1);
	browser = navigator.userAgent.toLowerCase();
	display_box = document.getElementById("display");
	// need to prevent clicking while move is happening
	position = parseInt(display_box.style.left);
	if (isNaN(position))
		position=0;
	var forwards = position - box;
	var remainder = position % box;
	//alert("forwards="+forwards+" limit="+limit+" remainder="+remainder);
	if (forwards <= limit || remainder != 0){ return false; }
	//alert("ok move");
	moveElement("display",forwards,0,10);
	return false;
}

function prepareTimeline() {

	if (!document.getElementsByTagName) return false;
	if (!document.getElementById) return false;

	var timeline = document.getElementById("timeline");
	if (timeline){

			// fetch the custom width, cunningly hidden in the title of the heading.
			// ...then apply it to the 

			var timelinetitle = document.getElementById("t-line");

			if (timeline.title == ""){
				var boxwidth = 550; // default value
				var boxheight = 175; // default value
			} else {
				var boxsize = timeline.title.split('-');
				var boxwidth = boxsize[0];
				var boxheight = boxsize[1];
			}

			timeline.title = ""; // remove the title once it s read to prevent mouseover thiingy

			//Imposto la larghezza della timeline
			timeline.style.width = boxwidth + "px";
			timeline.style.height = boxheight + "px";

			var boxes = document.getElementById("timeline").getElementsByTagName("div");
			var display_box = document.getElementById("display");

            var str = window.location.search;
            if (str.indexOf("eurekasa.donnamoderna.com")!=-1) box = 120;
			//Correggo la larghezza della finestra sulla timeline in base al numero di elementi da mostrare
			display_box.style.width = (boxes.length * box) + "px";
			display_box.style.position = "absolute";
	}
}

addLoadEvent(prepareTimeline);