function JsonScriptRequest(fullUrl) {
  this.fullUrl = fullUrl;
  this.headLoc = document.getElementsByTagName("head").item(0);
  this.scriptId = 'abeScriptId' + JsonScriptRequest.scriptCounter++;
}

JsonScriptRequest.scriptCounter = 1;

JsonScriptRequest.prototype.buildScriptTag = function () {
  this.scriptObj = document.createElement("script");
  this.scriptObj.setAttribute("type", "text/javascript");
  this.scriptObj.setAttribute("src", this.fullUrl);
  this.scriptObj.setAttribute("id", this.scriptId);
}

JsonScriptRequest.prototype.removeScriptTag = function () {
  this.headLoc.removeChild(this.scriptObj);
}

JsonScriptRequest.prototype.addScriptTag = function () {
  this.headLoc.appendChild(this.scriptObj);
}