function doInsert(ibTag, ibClsTag, isSingle) {

var isClose = false;
var obj_ta = document.=$form?>.=$text?>;

if ( (myVersion >= 4) && is_ie && is_win) {
if(obj_ta.isTextEdit){
obj_ta.focus();
var sel = document.selection;
var rng = sel.createRange();
rng.colapse;
if((sel.type == "Text" || sel.type == "None") && rng != null){
if(ibClsTag != "" && rng.text.length > 0)
ibTag += rng.text + ibClsTag;
else if(isSingle) isClose = true;
rng.text = ibTag;
}
}
else{
if(isSingle) isClose = true;
obj_ta.value += ibTag;
}
}
else if (obj_ta.selectionStart || obj_ta.selectionStart == '0') {

var startPos = obj_ta.selectionStart;
var endPos = obj_ta.selectionEnd;

if (obj_ta.setSelectionRange && startPos != endPos) {
obj_ta.value = obj_ta.value.substring(0, startPos) + ibTag + obj_ta.value.substring(startPos, endPos) + ibClsTag + obj_ta.value.substring(endPos, obj_ta.value.length)
obj_ta.selectionEnd = endPos + ibTag.length + ibClsTag.length;
}
else {
obj_ta.value = obj_ta.value.substring(0, startPos) + ibTag + obj_ta.value.substring(endPos, obj_ta.value.length);
obj_ta.selectionEnd = startPos + ibTag.length;
if(isSingle) isClose = true;
}
}
else {
if(isSingle) isClose = true;
obj_ta.value += ibTag;
}
obj_ta.focus();
return isClose;
}