$(document).ready(function() { 
				var options = { 
				target:        '#alert'
				}; 
				$('#contactForm').ajaxForm(options); 
				$('#last').val('');
			}); 

			$.fn.clearForm = function() {
			  return this.each(function() {
				var type = this.type, tag = this.tagName.toLowerCase();
				if (tag == 'form')
				  return $(':input',this).clearForm();
				if (type == 'text' || type == 'password' || tag == 'textarea')
				  this.value = '';
				else if (type == 'checkbox' || type == 'radio')
				  this.checked = false;
				else if (tag == 'select')
				  this.selectedIndex = -1;
			  });
			};