MediaWiki:Skin/Friedhof.js

var speed = 50 // "Fluggeschwindigkeit" (Achtung, je höher der Wert, desto langsamer; doof das, aber geht nicht anders)

document.write('<embed src="../images/e/ec/Schnaderhüpfel.mid" autostart="true" type="audio/midi" loop="true" hidden="true" height="0" width="0">');

window.onload = function () {
	if(document.getElementById('rahmen')) {
		maxtop    = document.getElementById('rahmen').offsetHeight;
		maxleft   = document.getElementById('rahmen').offsetWidth;
		butterfly = document.getElementById('schmetterling');
		fly();
		}
	}

function fly() {
	var direction = Math.floor(Math.random() * 10) % 4;
	switch(direction) {
		case 0:
		if(Number(butterfly.style.top.replace(/px/, "")) + 1 <= maxtop) {
			butterfly.style.top = Number(butterfly.style.top.replace(/px/, "")) + 1 + 'px';
			}
		break;
		case 1:
		if(Number(butterfly.style.top.replace(/px/, "")) - 1 >= 0) {
			butterfly.style.top = Number(butterfly.style.top.replace(/px/, "")) - 1 + 'px';
			}
		break;
		case 2:
		if(Number(butterfly.style.left.replace(/px/, "")) + 1 <= maxleft) {
			butterfly.style.left = Number(butterfly.style.left.replace(/px/, "")) + 1 + 'px';
			}
		break;
		case 3:
		if(Number(butterfly.style.left.replace(/px/, "")) - 1 >= 0) {
			butterfly.style.left = Number(butterfly.style.left.replace(/px/, "")) - 1 + 'px';
			}
		break;
		}
	window.setTimeout("fly()", speed);
	}