Mouse trail

javascript: var opt = 0.1; var pen = 'block'; var size = 10; var clr = "blue"; var rate = 0.005; var userrate=5; alert("mouse trail. by dragonmaster73101. press c to change color and r to change rate."); function mousemove(event) { var x = event.clientX; var y = event.clientY; x=x-8; y=y-8; (function() { var elem = document.createElement('div'); var body = document.getElementsByTagName('body')[0]; body.appendChild(elem); elem.style.position = 'fixed'; elem.style.top = '' + y + 'px'; elem.style.left = '' + x + 'px'; elem.style.margin = '10px'; elem.style.paddingTop = '10px'; elem.style.width = '' + size + 'px'; elem.style.height = '' + size + 'px'; elem.style.zIndex = 10000; elem.style.opacity = opt; elem.style.color = '' + clr + ''; elem.style.backgroundColor = '' + clr + ''; elem.style.border = '0px solid white'; elem.style.textAlign = 'center'; elem.id = 'paint'; elem.style.display = '' + pen + ''; elem.innerText = ''; function repeat() { elem.style.opacity = elem.style.opacity - rate; } setInterval(repeat, 15); }()); } window.addEventListener("keydown", function(event) { if (event.key == "r") { userrate=prompt("what do you want the rate to be? the lower the number, the faster the trail disappears. recommended: 5"); rate=userrate/1000; } if (event.key == "c") { clr=prompt("what do you want the color to be? must be very broad. ex: blue"); } }); window.addEventListener('mousemove', mousemove);