事件对象 获得 使用 冒泡 返回值

function getEvent() {return window.event || arguments.callee.caller.arguments[0];}var myEvent = getEvent();var x=y=menuOffsetWidth=menuOffsetHeight=0;var redge=document.body.clientWidth-myEvent.clientX;var bedge=document.body.clientHeight-myEvent.clientY;var objRightMenu = document.getElementById("rightMenuContainer");menuOffsetWidth = objRightMenu.offsetWidth;menuOffsetHeight = objRightMenu.offsetHeight;if(menuOffsetWidth == 0) menuOffsetWidth=200;if(menuOffsetHeight == 0) menuOffsetHeight=200;if (redge<menuOffsetWidth){x=document.body.scrollLeft + myEvent.clientX-menuOffsetWidth;} else {x=document.body.scrollLeft + myEvent.clientX;}if (bedge<menuOffsetHeight){y=document.body.scrollTop + myEvent.clientY - menuOffsetHeight;} else {y = document.body.scrollTop + myEvent.clientY;}myEvent.returnValue = false;myEvent.cancelBubble=true;