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Validate file size and mime type at client side

Does anyone know how to do that?? i NEED to check size and type before upload a file to server, and i dont want to use ActiveX Objects.

Tnx for comments.
Sunday, March 6, 2005
Check this this may helps you

function A()
var oas = new ActiveXObject("Scripting.FileSystemObject");
var d = document.a.b.value;
var e = oas.getFile(d);
var f = e.size;
alert(f + " bytes");

<form name="a">
<input type="file" name="b">
<input type="button" name="c" value="SIZE" onClick="A();">
Saturday, June 3, 2006

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