About browser incompatibility, but not good debugging methods

Ideas:

1. First determine the browser version

2. When the browser version is one, the page jumps. Jump to erro.html.

3. New Erro.html page

<script type= "Text/javascript" >
var browser=navigator.appname
var b_version=navigator.appversion
var version=b_version.split (";");
var trim_version=version[1].replace (/[]/g, "");

if (browser== "Microsoft Internet Explorer" && (trim_version== "MSIE6.0" | | trim_version== "MSIE7.0"))
{
alert (trim_version);
top.location=error.html;
top.navigate ("error.html");
}//else{
Top.location ("top.html");
//}
</script>

Note: Top.navigate ("") means to let the upper frame page jump. top.navigate ("error.html" t

About browser incompatibility, but not good debugging methods