var samen = new Array();
var samenxposition = new Array();
var samenyposition = new Array();
var updownstate = new Array();
var samenspeed = new Array();
var maxxposition;
var minxposition = 200;
var minyposition = 0;
var maxyposition = 150;
var tick_length = 20;
var current_run = 0;

function startUp() {
	maxxposition = (window.innerWidth / 2) + 500 - 55;
	//genereiere samen
	for (i = 0; i < maxxposition / 100; i++) {
		samen.push(document.createElement("IMG"));
		samen[i].src = "/wp-content/themes/oeko-jahr/images/samen-" + String(Math.round((Math.random() * 5) + 1)) + ".png";
		samen[i].style.position = "absolute";
		samenxposition.push(Math.round((Math.random() * (maxxposition - minxposition)) + minxposition));
		samen[i].style.left = String(samenxposition[i]) + "px";
		samenyposition.push(Math.round((Math.random() * (maxyposition - minyposition)) + minyposition));
		samen[i].style.top = String(samenyposition[i]) + "px";
		document.getElementById("header").appendChild(samen[i]);
		samenspeed.push(Math.round((Math.random() * 5) + 1));
		//setTimeout(function() {moveOn();}, tick_length);
	}
}

function moveOn() {
	for (i = 0; i < maxxposition / 100; i++) {
		if ((current_run % samenspeed[i]) == 0) {
			samenxposition[i] = samenxposition[i] + 1;
			if (samenxposition[i] > maxxposition) {
				samenxposition[i] = minxposition;
				samenyposition[i] = Math.round((Math.random() * (maxyposition - minyposition)) + minyposition);
				samen[i].style.top = String(samenyposition[i]) + "px";
			}
			samen[i].style.left = String(samenxposition[i]) + "px";
		}
	}
	current_run++;
	setTimeout(function() {moveOn();}, tick_length);
}