struCoder

var getStrDistance = function(str1, str2) {
	var lenStr1 = str1.length;
	var lenStr2 = str2.length;
	if (lenStr1 === 0 || lenStr2 === 0) {
		return lenStr1 === 0 ? lenStr2 : lenStr1;
	}
	var dArr = new Array(lenStr1 + 1);
	for (var i = 0; i <= lenStr1; i++) {
		dArr[i] = new Array(lenStr2 + 1);
		dArr[i][0] = i;

struCoder

/**
 * @author Dongxu Huang, Shu Ke, Wang Lei
 * @date   2013-07-08
 */
document.addEventListener("mousemove", update_mouse_pos, true);
document.addEventListener("mouseup", on_mouse_up, true);
document.addEventListener("mousedown", on_mouse_down, true);
document.addEventListener("dblclick", on_mouse_dbclick, true);

var clientX, clientY;

struCoder

/**
 * The first commented line is your dabblet’s title
 */

.demo {
	width: 200px;
	height: 200px;
	-webkit-box-shadow: 0px 0px 10px #333;
	box-shadow: 0px 0px 10px #333;
	color: transparent;