RefreshModule = function() {}; RefreshModule.HIDDEN_FIELD_ID = "__REFRESH_FIELD"; RefreshModule.prototype = { hiddenFieldId: RefreshModule.HIDDEN_FIELD_ID, createPageIdentifier: function() { var guid = this.newGuid(); document.getElementById(this.hiddenFieldId).value = guid; }, newGuid:function() { var g = ""; for(var i = 0; i < 32; i++) { g += Math.floor(Math.random() * 0xF).toString(0xF); } return g; } }; var refreshModule = new RefreshModule();