function addImage(idName,val) {
	var obj = this.document.getElementById(idName);

	var st_tag = '<img ';
	var ed_tag = ' />';
	if (val.search(/class=\"thumb\"/i) != -1) {
		st_tag = '<a ';
		ed_tag = '</a>';
	}
	
	if (!obj) return false;
	if (val == '') return false;
	if (document.selection) {
		obj.focus();
		var str = document.selection.createRange().text;
		if (!str) {
			document.selection.createRange().text = Array(st_tag, val,ed_tag).join('');
		} else {
			obj.value = Array(obj.value,st_tag,val,ed_tag).join('');
		}
	} else if ( (obj.selectionEnd - obj.selectionStart) == 0 ) {
		var bgnPos = obj.selectionStart;
		var endPos = obj.selectionEnd;
		var bfrStr = obj.value.substring(0, bgnPos);
		var fcsStr = Array(st_tag,val,ed_tag).join('');
		var difLen = fcsStr.length;
		var aftStr = obj.value.substring(endPos, obj.value.length);
		obj.value = Array(bfrStr,fcsStr,aftStr).join('');
		obj.setSelectionRange(bgnPos,endPos + difLen);
	} else {
		obj.value = Array(obj.value,st_tag,val,ed_tag).join('');
	}
	return false;
}