$(document).ready(function(){
		$('#submit').click(function(){
			if($('#file').val() == ""){
				alert('Please enter a file!');
				return false;
			}else{
				var str = $('#file').val();
				var pos = str.indexOf('.');
				var ext = str.slice(pos);
				var ext_lower = ext.toLowerCase();
				if(ext_lower != '.eps'){
					alert('You have entered file type: ' + ext_lower + "\n\n" + 'Please enter a valid .eps file.');
					return false;
				}
			}
		});
	});