function check(){
			if (form_contact.firstname.value == "")
			{
				alert("Please enter your firstname !")
				form_contact.firstname.focus();
				return false
			}
				if (form_contact.lastname.value == "")
			{
				alert("Please enter your lastname !")
				form_contact.lastname.focus();
				return false
			}
     		var	email = form_contact.email.value;
     		re=/\w+@\w+\.\w+/;
			if (email=="")
			{
				alert("Please enter your email !")
				form_contact.email.focus()
				return false
			}
			if(re.test(email)==false)
			{
				alert("Email incorrect form!")						
				form_contact.email.focus()
				return false
			}
			if (form_contact.phone.value == "")
			{
				alert("Enter you phone number!")						
				form_contact.phone.focus();
				return false
			}
			if (form_contact.message.value == "")
				{
				alert("Please enter message !")
				form_contact.message.focus();
				return false
			}

			return true
		}