Set width and height of Image Properties to 100% after image upload (elFinder).

Hello!

I am using the CKEditor with the elFinder.

When I upload an image from the elFinder i want to change the default width and height of the image properties to 100% automatically.

<script>
		function getUrlParam(paramName) {
	        var reParam = new RegExp('(?:[\?&]|&amp;)' + paramName + '=([^&]+)', 'i') ;
	        var match = window.location.search.match(reParam) ;
	        
	        return (match && match.length > 1) ? match[1] : '' ;
	    }
	
		$(function(){

			var funcNum = getUrlParam('CKEditorFuncNum');
 			
			var elf = $('#elfinder').elfinder({
				url : 'admin.php?mod=system&op=getFileManagerConnector',
				getFileCallback : function(fileUrl) {
	                window.opener.CKEDITOR.tools.callFunction(funcNum,fileUrl, function(){
	                	
                		 var widthField,heightField,urlField,
                		 	 dialog = this.getDialog(),
                			 width = height = '100%';  
	                	
	    				if (dialog.getName() == 'image')
	    				{			
	    					widthField = dialog.getContentElement( 'info', 'txtWidth' );
		    				heightField = dialog.getContentElement( 'info', 'txtHeight' );
		    				urlField = dialog.getContentElement( 'info', 'txtUrl' );   				    
	    					  
		    				if (urlField)
		    					urlField.setValue(fileUrl);
		    				
		    				if (widthField)
	    						widthField.setValue(width);	  					
	    					
		    				if (heightField)
		    					heightField.setValue(height);		    				 
		    			}   				
	    				
	    				return false;  
	    				
	    			});		               
	                window.close();
	               
	            },
			}).elfinder('instance');
		});
	</script>

Any ideas why this code doesn't work?

If i don't set the urlField , the width and height are set to 100%, but the urlField is empty,

It is supposed to work automatically , right?

Thanks in advance...