// custom functions

function validate_form(){
	d = document.enquiry_form;
	
	if (d.elements[3].value == ''){
		show1();
		alert('Please complete your first name');
		d.elements[3].focus();
	} else if (d.elements[4].value == ''){
		show1();
		alert('Please complete your last name');
		d.elements[4].focus();
	} else if (d.elements[6].value == ''){
		show1();
		alert('Please complete your company or organisation name');
		d.elements[6].focus();
	} else if (d.elements[7].selectedIndex == 0){
		show1();
		alert('Please complete your industry sector');
		d.elements[7].focus();
	} else if (d.elements[8].value == ''){
		show1();
		alert('Please complete your address');
		d.elements[8].focus();
	} else if (d.elements[11].value == ''){
		show1();
		alert('Please complete your town');
		d.elements[11].focus();
	} else if (d.elements[13].value == ''){
		show1();
		alert('Please complete your post code');
		d.elements[13].focus();
	} else if (d.elements[14].value == ''){
		show1();
		alert('Please complete your telephone');
		d.elements[14].focus();
	} else if (d.elements[15].value == ''){
		show1();
		alert('Please complete your email address');
		d.elements[15].focus();
	} else if (d.elements[20].selectedIndex == 0){
		show1();
		alert('Please advise us how you found out about us');
		d.elements[20].focus();
	} else if (d.elements[23].selectedIndex == 0){
		show2();
		alert('Please tell us the type of event you are planning');
		d.elements[23].focus();
	} else if (d.elements[25].value == '' && (d.elements[26].value == '' || d.elements[27].value == '')){
		show2();
		alert('Please tell us the date or proposed dates of your event');
		d.elements[25].focus();
	} else if (d.elements[29].value == ''){
		show2();
		alert('Please tell us your estimate for residential guests even if it is zero');
		d.elements[29].focus();
	} else if (d.elements[31].value == ''){
		show2();
		alert('Please tell us your estimate for non-residential guests even if it is zero');
		d.elements[31].focus();
	} else {
		d.submit();
	}
}