write a Usage of preventDefault() in event.js

Signed-off-by: arcticlion <david.malan@aol.com>
write a Usage of stopPropagation() in event.js

Signed-off-by: arcticlion <david.malan@aol.com>
write a Usage of eventPhase in event.js

Signed-off-by: arcticlion <david.malan@aol.com>
refine event.js

Signed-off-by: arcticlion <david.malan@aol.com>
add eventForIE.js

Signed-off-by: arcticlion <david.malan@aol.com>
attachEvent()中event的使用

Signed-off-by: arcticlion <david.malan@aol.com>
HTML特性指定的事件处理程序中event的用法

Signed-off-by: arcticlion <david.malan@aol.com>