Динамическая подгрузка файлов Jquery

 <form><select><option></option></select></form>

<form> 
<input id="btn1" type="button" value="File1"> <input id="btn2" type="button" value="File2"> <input id="btn3" type="button" value="File3"> <input id="btn4" type="button" value="File4"> 
</form> 
<script> 
		$(document).ready(function(){ 
		 
			$('#btn1').click(function(){ 
				$.ajax({ 
					url: "File1.php", 
					cache: false, 
					success: function(html){ 
						$("#container").html(html); 
					} 
				}); 
			}); 
			 
			$('#btn2').click(function(){ 
				$.ajax({ 
					url: "File2.php", 
					cache: false, 
					success: function(html){ 
						$("#container").html(html); 
					} 
				}); 
			}); 
			$('#btn3').click(function(){ 
				$.ajax({ 
					url: "File3.php", 
					cache: false, 
					success: function(html){ 
						$("#container").html(html); 
					} 
				}); 
			}); 
			$('#btn4').click(function(){ 
				$.ajax({ 
					url: "File4.php", 
					cache: false, 
					success: function(html){ 
						$("#container").html(html); 
					} 
				}); 
			});			 
		}); 
	</script>