function clearForm(form_id)
{
	var form = document.getElementById(form_id);
	
	if (form) {
		for (i = 0; i < form.elements.length; i++) {
			if (form.elements[i].type == 'checkbox') {
				if (form.elements[i].name == 'company_types[]') {
					form.elements[i].checked = true;
				} else {
					form.elements[i].checked = false;
				}
			}
			
			if (form.elements[i].type == 'select-one') {
				form.elements[i].selectedIndex = 0;
			}
			
			if (form.elements[i].type == 'text') {
				form.elements[i].value = '';
			}
		}
	}
}