what to do, if I get error `breaking on JScript rumtime error - object expected

what to do, if I get error `breaking on JScript rumtime error - object expected, his is the error I am getting with following code

#all {
				 margin: 0 auto;
				 width: 800px;
				 text-align: left;
				}
		</style>
		<script type="text/javascript">

var s = document.getElementById("menu1");

var ops = s.options[s.selectedIndex].value ;

function defaultDisplay(){

document.getElementById('111').style.display = 'none';
				document.getElementById('222').style.display = 'none';
				document.getElementById('333').style.display = 'none';
			}

switch(ops){
				alert("4");
				case("tv"):
					 document.getElementById('111').style.display = 'none';
					 document.getElementById('222').style.display = 'none';
					 document.getElementById('333').style.display = 'inline';
					 break;

case("eating"):
					 document.getElementById('111').style.display = 'inline';
					 document.getElementById('222').style.display = 'none';
					 document.getElementById('333').style.display = 'none';
					 break;

case("biting"):
						 document.getElementById('111').style.display = 'none';
						 document.getElementById('222').style.display = 'inline';
						 document.getElementById('333').style.display = 'none';
						 break;
				default:
						 document.getElementById('111').style.display = 'none';
						 document.getElementById('222').style.display = 'none';
					 	 document.getElementById('333').style.display = 'none';

}

</script>
		</head>
			<body onload="defaultDisplay()">

<h3>Following is left image</h3>
						<img src="C:\Users\Jignesh\Desktop\Pics & Movies\IMG_4606.jpg" ¸width="300" height="200"/>

</div>
				<div style="clear:both"></div>

<div>

<p>Lets see if this image has been aligned to right or not</p>

<div style="float:right;">
								<h3>Following is Right image</h3>
							</div>
							<div style="clear:both"></div>
							<p><img id="111" style="float:right" src="C:\Users\Jignesh\Desktop\Pics & Movies\IMG_5118.jpg" ¸width="200" height="135" /></p>
							<p><img id="222" style="float:right" src="C:\Users\Jignesh\Desktop\Pics & Movies\IMG_4729.jpg" ¸width="200" height="135" /></p>
							<p><img id="333" style="float:right" src="C:\Users\Jignesh\Desktop\Pics & Movies\IMG_4606.jpg" ¸width="200" height="135" /></p>

<p> Select image for display on right</p>

<select id="menu1" onchange="switch()">
							<option value="noimage">Select Image</option>
							<option value="eating">Vedant eating with Swejal</option>
							<option value="tv">Vedant watching TV with Dhyey</option>
							<option value="biting">Vedant Biting Jignesh</option>
				</select>
				</div>
				</div>
			</div>

</body>
</html>

Whats wrong with this ?

Learn to use the JavaScript debugger.

Check that the element exists when you are trying to reference it.