javascript 获取div宽，与浏览器之间的距离
//导航选项卡/*更换显示样式*/function setTab(m,n){var tli = document.getElementById("menu"+m).getElementsByTagName("li");var mli = document.getElementById("main"+m).getElementsByTagName("ul");var faterLfet = document.getElementById("tabs1").offsetLeft;//得到父div到浏览器左边的距离var titleWidth = tli[1].clientWidth;//得到一级菜单的宽度var titleLeft = titleWidth * n;//得到第n个一级菜单到父div左边的距离var left = faterLfet + titleLeft;//计算第n个一级菜单到浏览器左边的距离var oneMenuMiddle = left - titleWidth / 2;//得到一级菜单重点与浏览器左边的距离for(i=0;i<tli.length;i++){ tli[i].className=i==n?"hover":""; mli[i].style.display=i==n?"block":"none"; var tabs1Num = mli[n].clientWidth; //获取二级菜单的宽度 if(n == 0){ var twoLeft = oneMenuMiddle - tabs1Num / 2;//得到二级菜单与浏览器左边的距离 }else{ var twoLeft = oneMenuMiddle - tabs1Num / 2 -180;//得到二级菜单与浏览器左边的距离 } document.getElementById("fatherDiv").style.left = twoLeft;}}?