// form validation stuff
	
		function validate() {		
			
   			var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
   			
   			var strippedPhone = document.contactForm.phone.value.replace(/[\(\)\.\-\ ]/g, '');
   			
   			var emailAddress = document.contactForm.email.value;		
   			
   			var alertMessage = "" ;
   			
   			valid = true;
   			
   			error = false;
   			
			
			// text fields
			if (document.contactForm.first_name.value.length == 0){
				document.contactForm.first_name.style.background = 'Yellow';
				alertMessage += "Please tell us your first name. \n \n";
				error = true;
			} else {
				document.contactForm.first_name.style.background = 'White';
			}
			
			if (document.contactForm.last_name.value.length == 0){
				document.contactForm.last_name.style.background = 'Yellow';
				alertMessage += "Please tell us your last name. \n \n";
				error = true;
			} else {
				document.contactForm.last_name.style.background = 'White';
			}
   			
   			if(reg.test(emailAddress) == false) {
   				document.contactForm.email.style.background = 'Yellow';
      			alertMessage += "Please enter valid email address. \n \n";	
      			error = true;
   			} else {
   				document.contactForm.email.style.background = 'White';
   			}

			if (isNaN(parseInt(strippedPhone)) || (strippedPhone.length < 10)) {
				document.contactForm.phone.style.background = 'Yellow';
				alertMessage += "Please enter valid phone number (including area code). \n \n";
				error = true;
    		} else {
				document.contactForm.phone.style.background = 'White';
			}
			
			if (document.contactForm.title.value.length == 0) {
				document.contactForm.title.style.background = 'Yellow';
				alertMessage += "Please tell us your title. \n \n";
				error = true;
			} else {
				document.contactForm.title.style.background = 'White';
			}

			if (document.contactForm.company.value.length == 0) {
				document.contactForm.company.style.background = 'Yellow';
				alertMessage += "Please tell us your company name. \n \n";
				error = true;
			} else {
				document.contactForm.company.style.background = 'White';
			}

			if (document.contactForm.URL.value.length == 0) {
				document.contactForm.URL.style.background = 'Yellow';
				alertMessage += "Please tell us your website URL. \n \n";
				error = true;
			} else {
				document.contactForm.URL.style.background = 'White';
			}

			if (document.contactForm.elements[11].selectedIndex == 0) {
				document.contactForm.elements[11].style.background = 'Yellow';
				alertMessage += "Please tell us who you are. \n \n";
				error = true;
			} else {
				document.contactForm.elements[11].style.background = 'White';
			}

			if (document.contactForm.elements[12].selectedIndex == 0) {
				document.contactForm.elements[12].style.background = 'Yellow';
				alertMessage += "Please tell us your number of monthly impressions. \n \n";
				error = true;
			} else {
				document.contactForm.elements[12].style.background = 'White';
			}

			if (document.contactForm.elements[13].selectedIndex == 0) {
				document.contactForm.elements[13].style.background = 'Yellow';
				alertMessage += "Please tell us your monthly advertising budget. \n \n";
				error = true;
			} else {
				document.contactForm.elements[13].style.background = 'White';
			}

			if (document.contactForm.elements[14].selectedIndex == 0) {
				document.contactForm.elements[14].style.background = 'Yellow';
				alertMessage += "Please tell us your current ad server. \n \n";
				error = true;
			} else {
				document.contactForm.elements[14].style.background = 'White';
			}
					
			if (error){
				alertMessage = "There are some errors in the form: \n \n" + alertMessage;
				alert(alertMessage);
				valid = false;
			}
			
			return valid;

			
		}<!-- advr1.advertising.sp2.yahoo.com compressed/chunked Sat Dec  5 07:04:29 PST 2009 -->