.mesWindow {
border: #666 1px solid;
background: #fff;
}

.mesWindowTop {
border-bottom: #eee 1px solid;
margin-left: 4px;
padding: 3px;
font-weight: bold;
text-align: left;
font-size: 12px;
}

.mesWindowContent {
margin: 4px;
font-size: 12px;
}

.mesWindow .close {
height: 15px;
width: 28px;
border: none;
cursor: pointer;
text-decoration: underline;
background: #fff
}

"
+ content + "

";
  styleStr = "left:0px;top:25px;position:absolute;";
  mesW.style.cssText = styleStr;
  document.body.appendChild(mesW);
}
//让背景渐渐变暗
function showBackground(obj, endInt) {
  if (isIe) {
   obj.filters.alpha.opacity += 1;
   if (obj.filters.alpha.opacity     setTimeout(function() {
     showBackground(obj, endInt)
    }, 5);
   }
  } else {
   var al = parseFloat(obj.style.opacity);
   al += 0.01;
   obj.style.opacity = al;
   if (al     setTimeout(function() {
     showBackground(obj, endInt)
    }, 5);
   }
  }
}
//关闭窗口
function closeWindow() {
  if (document.getElementById('back') != null) {
   document.getElementById('back').parentNode.removeChild(document
     .getElementById('back'));
  }
  if (document.getElementById('mesWindow') != null) {
   document.getElementById('mesWindow').parentNode
     .removeChild(document.getElementById('mesWindow'));
  }
  if (isIe) {
   setSelectState('');
  }
}
//测试弹出
function testMessageBox(ev) {
  var objPos = mousePosition(ev);
  messContent = "

";
showMessageBox('', messContent, objPos, 1550);
}

//下面写在body调用上面的方法

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