function MoveTortue(ev){if(document.layers){document.layers['tortue'].left = ev.pageX + 5;document.layers['tortue'].top  = ev.pageY + 20;}else{if(document.all){document.all.tortue.style.pixelLeft = event.x + document.body.scrollLeft;document.all.tortue.style.pixelTop  = event.y + 15 + document.body.scrollTop;}else{document.getElementById('tortue').style.left = ev.pageX + 5;document.getElementById('tortue').style.top  = ev.pageY + 20;}}}if(document.layers){document.layers['tortue'].visibility = 'visible';document.captureEvents(Event.MOUSEMOVE);}else{if(document.all){ document.all.tortue.style.visibility = 'visible'; }else{ document.getElementById('tortue').style.visibility = 'visible'; }}document.onmousemove = MoveTortue;