jQuery.fn.exists = function(){return ($(this).length > 0);};
statusImage = new Image();
statusImage.src = '/site_media/pictures/loading.gif'

function addBodyDiv(divID){
    $('body').append("<div id='" + divID + "'></div>");
    };

function dialogOptionsAuto(dgTitle){
   var dgOptions = {
         modal: true,
         width: 'auto',
         height: 'auto',
         title: dgTitle,
         minWidth:200,
         minHeight:50,
         open: function(event, ui)
         {
         $(event.target).dialog('option', 'width', ($(event.target)[0].scrollWidth + 50) + 'px');
         $(event.target).dialog('option', 'position', 'center');
         },
         resizable:true,
         close: function() {$(this).dialog('destroy').remove(); }
         };
     return dgOptions;
     };    
     
function jqueryPost(jsonUrl, jsonData){
    $.post(jsonUrl, jsonData, function(data){
        if (data.type == 'JAVA'){eval(data.javascript); return;};
        if (data.type == 'DIALOG'){ errorDialog(data.error); return;};
        if (data.type == 'OK'){window.location.reload();};
        if (data.type == 'URL'){ window.location = data.url; return;};
        }, 'json');
    };   

function postData(postUrl, postVars, statusMsg, container){
    $.ajax({
        type: 'POST',
        url: postUrl,
        data: postVars,
        async: false,
        success: function(data){resolveJsonResponse(data)},
        dataType: 'json'
        });
    };

function jqueryJsonForm(frmName, jsonUrl, newLoc, errorSpan, statusMsg){
    if (!statusMsg) {statusMsg = 'Saving. Please wait'};
    var errSpan = $('#' + errorSpan);
    var frm = $("#" + frmName);
    if (errSpan.exists()){errSpan.html(''); if(statusMsg){errSpan.html('<div style="padding:5px;"><img src="/site_media/images/lock_s.png" />' + statusMsg + '</div>')}};
    $.ajax( {
        type: 'POST',
        url: jsonUrl,
        data: frm.serialize(),
        success: function(data){
        if (data.type == 'INVALID'){
            if (data.errors) {
            $.each(data.errors.split(','), function(){
                if (errSpan.exists()){errSpan.html("<div style='background:#FDBFBF; padding:5px;'><img src='/site_media/images/warning_s.png' />" + data.errorMsg + '</div>')};
                return;
                })}};
        if (data.type == 'TEXT'){if (errSpan.exists()){errSpan.html('<div style="padding:5px;"><img src="/site_media/images/warning_s.png" />' + data.error + '</div>'); return;}};
        if (data.type == 'JAVA'){eval(data.javascript); return;};
        if (data.type == 'OK'){window.location = newLoc;};
        if (data.type == 'DIALOG'){ errorDialog(data.error); return;};
        if (data.type == 'URL'){ window.location = data.url; return;};
        if (data.type == 'INFO'){ infoDialog(data.message); return};
        }, 
        dataType: 'json',
        async: false
        });
    };   

function resolveJsonResponse(data){
    if (data.type == 'TEXT'){errorDialog(data.error); return};
    if (data.type == 'JAVA'){eval(data.javascript); return};
    if (data.type == 'OK'){window.location.reload()};
    if (data.type == 'URL'){window.location = data.url};
    if (data.type == 'DIALOG'){ errorDialog(data.error); return};
    if (data.type == 'INFO'){ infoDialog(data.message); return};
    };
  
function errorDialog(message){
    $('body').append("<div id='error_dialog'></div>");
    $('#error_dialog').load(
        '/general/error/dialog/', {'message':message}, function(){ 
        $(this).dialog(dialogOptionsAuto('Error Message'));
        });
   };
   
function infoDialog(message){
    $('body').append("<div id='info_dialog'></div>");
    $('#info_dialog').load(
        '/general/info/dialog/', {'message':message}, function(){ 
        $(this).dialog(dialogOptionsAuto('Info Message'));
        });
    };