String.prototype.trim = function() {  
    return this.replace(/^\s+|\s+$/g,'');  
}

Event.onDOMReady( function(){ 


	if($('add-comment-btn')) {

		Event.observe($('add-comment-btn'), 'click', function(){ 
		
			$('cform').submit(); 
		
		} ); 
	}

} );