Sugarcrm禁用在离开之前确认弹出窗口

When there is some changes in the form and if user try to navigate to other page, sugarcrm asks confirmation in a popup to leave.

How to disable this functionality in sugarcrm 7?

Update

Actually i am exporting a csv. The file get downloaded on the first click of the button.

When i click the button for second time it is showing confirmation popup as in in the attachment.

comment out everything in CloseActivityPanel function and after commenting your code will be this only as follows:

    closeActivityPanel: {
    show:function(module,id,new_status,viewType,parentContainerId){
        if (SUGAR.util.closeActivityPanel.panel)
   SUGAR.util.closeActivityPanel.panel.destroy();
     var singleModule = SUGAR.language.get("app_list_strings", "moduleListSingular")[module];
     singleModule = typeof(singleModule != 'undefined') ? singleModule.toLowerCase() : '';
     var closeText =  SUGAR.language.get("app_strings", "LBL_CLOSE_ACTIVITY_CONFIRM").replace("#module#",singleModule);
                        var args = "action=save&id=" + id + "&record=" + id + "&status=" + new_status + "&module=" + module;
                        var callback = {
                            success:function(o)
                            {
                               window.setTimeout(function(){if(document.getElementById('search_form')) document.getElementById('search_form').submit(); else window.location.reload(true);}, 0);
                            },
                            argument:{'parentContainerId':parentContainerId}
                        };

                        YAHOO.util.Connect.asyncRequest('POST', 'index.php', callback, args);
    }
},

This way confirmation pop will not come.

In case if you wants to disable onbeforeunload then use the following code according to your requirement.

$(document).on("submit", "form", function(event){
        window.onbeforeunload = null;
});