if(typeof HTMLElement!="undefined" && ! HTMLElement.prototype.insertAdjacentElement){ HTMLElement.prototype.insertAdjacentElement = function (where,parsedNode) { switch (where){ case 'beforeBegin': this.parentNode.insertBefore(parsedNode,this) break; case 'afterBegin': this.insertBefore(parsedNode,this.firstChild); break; case 'beforeEnd': this.appendChild(parsedNode); break; case 'afterEnd': if (this.nextSibling) this.parentNode.insertBefore(parsedNode,this.nextSibling); else this.parentNode.appendChild(parsedNode); break; } } HTMLElement.prototype.insertAdjacentHTML = function (where,htmlStr) { var r = this.ownerDocument.createRange(); r.setStartBefore(this); var parsedHTML = r.createContextualFragment(htmlStr); this.insertAdjacentElement(where,parsedHTML) } HTMLElement.prototype.insertAdjacentText = function (where,txtStr) { var parsedText = document.createTextNode(txtStr) this.insertAdjacentElement(where,parsedText) } }