Infoga text i en textarea, där musmarkören är, med jquery

Fick löst det genom:

jQuery.fn.extend({
		insertAtCaret: function(myValue){
		  return this.each(function(i) {
		    if (document.selection) {
		      this.focus();
		      sel = document.selection.createRange();
		      sel.text = myValue;
		      this.focus();
		    }
		    else if (this.selectionStart || this.selectionStart == '0') {
		      var startPos = this.selectionStart;
		      var endPos = this.selectionEnd;
		      var scrollTop = this.scrollTop;
		      this.value = this.value.substring(0, startPos)+myValue+this.value.substring(endPos,this.value.length);
		      this.focus();
		      this.selectionStart = startPos + myValue.length;
		      this.selectionEnd = startPos + myValue.length;
		      this.scrollTop = scrollTop;
		    } else {
		      this.value += myValue;
		      this.focus();
		    }
		  })
		}
	});

$("#textarea").insertAtCaret('text');