//validate form
	function checkform() {
	
		//-- Name --//
		var patient_name = document.mainform.name.value;
		if (patient_name.length == 0) {
			alert("Please enter your name");
			document.mainform.name.focus();
			return false;
		}

		//-- Check Phone number --//
		var patient_area_code = document.mainform.area_code.value;
		if (patient_area_code.length == 0) {
			alert("Please enter your area code");
			document.mainform.area_code.focus();
			return false;
		}
		
		
		var patient_phone = document.mainform.phone.value;
		if (patient_phone.length == 0) {
			alert("Please enter your phone number");
			document.mainform.phone.focus();
			return false;
		}
		

		//-- Check email address --//
		var patient_email = document.mainform.email.value;
		if (patient_email.length == 0) {
			alert("Please enter your email address");
			document.mainform.email.focus();
			return false;
		}
		else {
			email_dot = 0
			email_at = 0
			for (j=0;j<patient_email.length;j++)	{
				if (patient_email.charAt(j) == '@')	{
					email_at = 1;
				}
				if (patient_email.charAt(j) == '.')	{
					email_dot = 1;
				}
			}
		}
		//--- Check email for blank Spaces --//
		if (patient_email.indexOf(" ") != -1) {
			alert("No blank spaces in email address allowed");
			document.mainform.email.focus();
			return false;
		}
		//--- Check email if it is ok --//
		if ( (email_dot != 1) || (email_at != 1)) {
			alert("The e-mail address you entered is not valid.");
			document.mainform.email.focus();
			return false;
		}
		
		//-- Check Details--//
		var patient_details = document.mainform.query_details.value;
		if (patient_details.length == 0)	{
			alert("Please enter the details of your query");
			document.mainform.query_details.focus();
			return false;
		}
		
		return true;
	}