Minki lub Znaczniki w formularzu

Kod:
    function insertTags(tagOpen, tagClose, sampleText) {

        var txtarea;

        txtarea = document.getElementById("jakas_textarea");

        if (document.selection && !is_gecko) {

            var theSelection = document.selection.createRange().text;

            if (!theSelection) {theSelection=sampleText;}

            txtarea.focus();

            if (theSelection.charAt(theSelection.length - 1) == " ") {

                theSelection = theSelection.substring(0, theSelection.length - 1);

                document.selection.createRange().text = tagOpen + theSelection + tagClose + " ";

            } else {

                document.selection.createRange().text = tagOpen + theSelection + tagClose;

            }

            // Mozilla

        } else if(txtarea.selectionStart || txtarea.selectionStart == '0') {

            var replaced = false;

            var startPos = txtarea.selectionStart;

            var endPos = txtarea.selectionEnd;

            if (endPos-startPos) {replaced = true;}

            var scrollTop = txtarea.scrollTop;

            var myText = (txtarea.value).substring(startPos, endPos);

            if (!myText) {myText=sampleText;}



            var subst;

            if (myText.charAt(myText.length - 1) == " ") {

                subst = tagOpen + myText.substring(0, (myText.length - 1)) + tagClose + " ";

            } else {

                subst = tagOpen + myText + tagClose;

            }

            txtarea.value = txtarea.value.substring(0, startPos) + subst +

            txtarea.value.substring(endPos, txtarea.value.length);

            txtarea.focus();



            if (replaced) {

                var cPos = startPos+(tagOpen.length+myText.length+tagClose.length);

                txtarea.selectionStart = cPos;

                txtarea.selectionEnd = cPos;

            } else {

                txtarea.selectionStart = startPos+tagOpen.length;

                txtarea.selectionEnd = startPos+tagOpen.length+myText.length;

            }

            txtarea.scrollTop = scrollTop;

        }

        if (txtarea.createTextRange) {txtarea.caretPos = document.selection.createRange().duplicate();}

    }