用document.oncontextmenu = rightClick;
捕获时,只能获得<area>对应的img对象
而用area对象的oncontextmenu事件又不起作用
how????
<IMG SRC="/myweb/helo?op=report_helloImage&name=/image_0.png" WIDTH=596.7 HEIGHT=280.8 BORDER=0 USEMAP="#map1" RH='1' CH='1' CX='menu1'>
<MAP name="map1">
<AREA onclick='rightClick(this)' oncontextmenu = 'alert("dd")' alt='4576798.81' RH='1' CH='1' CX='menu1' shape="poly" coords="221,169,250,140,250,192,221,221">
<AREA onclick='rightClick(this)' oncontextmenu = 'alert("dd")' alt='4576798.81' RH='1' CH='1' CX='menu1' shape="poly" coords="105,169,134,140,250,140,221,169">
<AREA onclick='rightClick(this)' oncontextmenu = 'alert("dd")' alt='4576798.81' RH='1' CH='1' CX='menu1' shape="rect" coords="105,169,221,221">
<AREA onclick='rightClick(this)' oncontextmenu = 'alert("dd")' alt='6996919.42' RH='2' CH='1' CX='menu1' shape="poly" coords="339,70,368,41,368,192,339,221">
</MAP>