function validateEmail(eemail) {  
			var emailPattern = /^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$/;  
			return emailPattern.test(eemail);  
		}  

		function validate(formData, jqForm, options) {
			document.getElementById('nname_error').innerHTML = '';
			document.getElementById('pphone_error').innerHTML = '';
			document.getElementById('eemail_error').innerHTML = '';
			document.getElementById('ffile_error').innerHTML = '';
		    var form = jqForm[0];
		    var strAlert = '';
		    if (form.nname.value.length <= 0) {
		    	document.getElementById('nname_error').innerHTML = 'Please enter your name.';
		        strAlert += 'Please enter your name.\n\r'; 
		    }
		    if (form.pphone.value.length <= 0) { 
		    	document.getElementById('pphone_error').innerHTML = 'Please enter your phone number.';
		        strAlert += 'Please enter your phone number.\n\r'; 
		    } else if ( !form.pphone.value.match(/^[0-9]{6,14}$/i) ) {
		    	document.getElementById('pphone_error').innerHTML = 'Please enter a valid phone number.';
		    	strAlert += 'Please enter a valid phone number.\n\r';
		    }
		    if (form.eemail.value.length <= 0) { 
		    	document.getElementById('eemail_error').innerHTML = 'Please enter your email address.';
		        strAlert += 'Please enter your email address.\n\r'; 
		    } else if ( !validateEmail(form.eemail.value) ) {
		    	document.getElementById('eemail_error').innerHTML = 'Please enter a valid email address.';
		    	strAlert += 'Please enter a valid email address.\n\r';
		    }
		    if ( form.ffile.value.length <= 0 ) {
		    	document.getElementById('ffile_error').innerHTML = 'Please upload a file.';
		    	strAlert += 'Please upload a file.\n\r';
		    } else if ( !form.ffile.value.match(/^.+\.(zip|rar)$/i) ) { 
		    	document.getElementById('ffile_error').innerHTML = 'Please upload a zip or rar archive.';
		        strAlert += 'Please upload a zip or rar archive.\n\r'; 
		    }
		    
		    if ( strAlert.length > 0 ) {
//		    	alert(strAlert);
		    	return false;
		    } 
		}
		
        // wait for the DOM to be loaded 
        $(document).ready(function() { 
			 var options = { 
			        target:        '#output',       // target element(s) to be updated with server response 
			        beforeSubmit:  validate,        // pre-submit callback 
			        //success:     showResponse,  // post-submit callback 
			 
			        // other available options: 
			        //url:        url           // override for form's 'action' attribute 
			        type:        'post',        // 'get' or 'post', override for form's 'method' attribute 
			        //dataType:  'script',      // 'xml', 'script', or 'json' (expected server response type) 
			        clearForm:    true          // clear all form fields after successful submit 
			        //resetForm:  true          // reset the form after successful submit 
			 
			        // $.ajax options can be used here too, for example: 
			        //timeout:   3000 
			    }; 
			 	
			    // bind to the form's submit event 
			    $('#myForm').submit(function() { 
			        // inside event callbacks 'this' is the DOM element so we first 
			        // wrap it in a jQuery object and then invoke ajaxSubmit 
			        $(this).ajaxSubmit(options); 
			 
			        // !!! Important !!! 
			        // always return false to prevent standard browser submit and page navigation 
			        return false; 
			    }); 
		});