function show_layer(layer){
    //alert(layer);
    document.getElementById(layer).style.display='';
}

function hide_layer(layer){
    //alert(layer);
    document.getElementById(layer).style.display='none';
}

function show_parent_layer(layer){
    window.opener.document.getElementById(layer).style.display='';
}

function hide_parent_layer(layer){
    window.opener.document.getElementById(layer).style.display='none';
}

function swap_layer(layer){
    if(document.getElementById(layer).style.display==''){
        hide_layer(layer);
    }else{
        show_layer(layer);
    }
}

function get_address(calling_form,prefix,layer){
    var field=prefix+'postcode';
    //alert (calling_form+' '+field+' '+layer);
    url='/assets/scripts/address.php?postcode='+document.forms[calling_form].elements[field].value+'&formname='+calling_form+'&fieldprefix='+prefix+'&layer='+layer;
    new_popup(url,'address','505','350','no');
}

function new_popup(url, name, width, height, scroll){

    window.open(url, name, 'scrollbars='+scroll+', width='+width+', height='+height);
}