function contact_form_validation()
	{
		if(trim(document.contact_form.name.value)=="")
		{
			alert("Please enter name.");
			document.contact_form.name.focus();
			return false;
		}
		if(trim(document.contact_form.contact_no.value)=="")
		{
			alert("Please enter contact number.");
			document.contact_form.contact_no.focus();
			return false;
		}
		if(!isNaN(document.contact_form.contact_no.value)=="")
		{
			alert("Please enter only numbers in contact number field.");
			document.contact_form.contact_no.focus();
			return false;
		}
		if(trim(document.contact_form.email.value)=="")
		{
			alert("Please enter email address.");
			document.contact_form.email.focus();
			return false;
		}
		if(validate_email(document.contact_form.email.value)=="")
		{
			alert("Please enter valid email address.");
			document.contact_form.email.focus();
			return false;
		}
		if(trim(document.contact_form.date_o_f.value)=="")
		{
			alert("Please enter date of function.");
			document.contact_form.date_o_f.focus();
			return false;
		}
		if(trim(document.contact_form.loc_o_f.value)=="")
		{
			alert("Please enter location of function.");
			document.contact_form.loc_o_f.focus();
			return false;
		}
		if(trim(document.contact_form.menu_int.value)=="")
		{
			alert("Please enter menu interested in.");
			document.contact_form.menu_int.focus();
			return false;
		}
		if(trim(document.contact_form.drinks_pack.value)=="")
		{
			alert("Please enter drinks package.");
			document.contact_form.drinks_pack.focus();
			return false;
		}
		if(trim(document.contact_form.num_o_guest.value)=="")
		{
			alert("Please enter number of guest.");
			document.contact_form.num_o_guest.focus();
			return false;
		}
		if(!isNaN(document.contact_form.num_o_guest.value)=="")
		{
			alert("Please enter only numbers in number of guest field.");
			document.contact_form.num_o_guest.focus();
			return false;
		}
		if(trim(document.contact_form.hear_about.value)=="")
		{
			alert("Please select from where you heard about us?");
			document.contact_form.hear_about.focus();
			return false;
		}
	}