就是工具中的弹簧。给一个图,图中的白色梯形是用二维工具绘制的二维自定义图素。<img src="attachments/dvbbs/2004-5/20045217544698347.jpg" border="0" onload="if(this.width>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(\'attachments/dvbbs/2004-5/20045217544698347.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />