页面元素同比例放大显示代码

<script type="text/javascript">
var iwidth = window.screen.width; 
if (iwidth <= 1200) { } 
else if
(iwidth > 1200 && iwidth < 1366) { document.write('<style type="text/css">body {transform:scale(1.10);}</style>'); } 
else if
(iwidth >= 1366 && iwidth <= 1920) { document.write('<style type="text/css">body {transform:scale(1.25);}</style>'); } 
else
{ document.write('<style type="text/css">body {transform:scale(1.50);}</style>'); } 
document.write('<style type="text/css">body {transform-origin:center top;overflow-x:hidden;}</style>');
</script>