js获取屏幕

<script language="javascript">var h = "";h += " 网页可见区域宽："+ document.body.clientWidth+"\n";h += " 网页可见区域高："+ document.body.clientHeight+"\n";h += " 网页可见区域宽："+ document.body.offsetWidth +" (包括边线和滚动条的宽)"+"\n";h += " 网页可见区域高："+ document.body.offsetHeight +" (包括边线的宽)"+"\n";h += " 网页正文全文宽："+ document.body.scrollWidth+"\n";h += " 网页正文全文高："+ document.body.scrollHeight+"\n";h += " 网页被卷去的上："+ document.body.scrollTop+"\n";h += " 网页被卷去的左："+ document.body.scrollLeft+"\n";h += " 网页正文部分上："+ window.screenTop+"\n";h += " 网页正文部分左："+ window.screenLeft+"\n";h += " 屏幕分辨率的宽："+ window.screen.width+"\n";h += " 屏幕分辨率的高："+ window.screen.height+"\n";h += " 屏幕可用工作区宽度："+ window.screen.availWidth+"\n";h += " 屏幕可用工作区高度："+ window.screen.availHeight+"\n";h += " 你的屏幕设置是 "+ window.screen.colorDepth +" 位彩色"+"\n";h += " 你的屏幕设置 "+ window.screen.deviceXDPI +" 像素/英寸"+"\n";alert(h);</script>