function validate_required(field,alerttxt)
{with(field)
{if(value==null||value=="")
{alert(alerttxt);return false}
else{return true}}}
function validate_supportform(thisform)
{with(thisform)
{if(validate_required(visitor,"Please enter your name")==false){visitor.focus();return false};if(validate_required(visitormail,"Please enter your Email")==false){visitormail.focus();return false};if(validate_required(notes,"Please enter message")==false){notes.focus();return false};}}