在线下载安装：
Myeclipse:Help > Software Updates ->Find and Install
再随后打开的对话框里选择Search for new features to install,
再随后打开的对话框里选择New remote site
在打开的"New Update Site"中输入如下:
Name: JSEclipse from Adobe Labs URL :http://download.macromedia.com/pub/labs/jseclipse/autoinstall
点击OK