function validate_form()
{
	var err1 = 'Please supply valid information for:';
	var err2 = '';
	if(!is_valid_email(document.mainform.email.value))
	{	
		err2 += ' Email.';
	}
		
	if(document.mainform.oldstate.options[document.mainform.oldstate.selectedIndex].value == '--')
	{	
		err2 += ' Old state.';
	}
		
	if(document.mainform.oldlocation.value == '')
	{
		err2 += ' Old town.';
	}
	
	if(document.mainform.newstate.options[document.mainform.newstate.selectedIndex].value == '--')
	{	
		err2 += ' New state.';
	}
	
	
	if(document.mainform.newlocation.value == '')
	{	
		err2 += ' New town.';
	}
	
	if (err2 != '')
	{
		alert(err1 + err2);
		return false;
	}
	
}



function is_valid_email(arg_email)
{
	var status = false;     
	var emailRegEx = /^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$/i;
    if (arg_email.search(emailRegEx) == -1)           
    	return false;
	else
		return true;
}