VML在聊天室实现绘画的应用

大家看下这个聊天室,能够在白板绘画
screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt='Click here to open new window\nCTRL+Mouse wheel to zoom in/out';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor='hand'; this.alt='Click here to open new window\nCTRL+Mouse wheel to zoom in/out';}" onclick="if(!this.resized) {return true;} else {window.open(this.src);}" onmousewheel="return imgzoom(this);" alt="" />
http://www.webchat.com.cn/webchat/group/mainSpaceOfChatGroup.htm?bbs_huse_cn
个人觉得蛮好玩的,应该是用了VML吧

不错  谁做的啊？