function dynPopup(url, w, h) {
    var u, t, l = (screen.availWidth-w)/2;
    t = (screen.availHeight-h)/2;
    u = new Date().getTime();
    vindue=window.open(url,"popup"+u,"width="+w+",height="+h+",left="+l+",top="+t+",toolbar=0,location=0,directories=0,status=no,menubar=0,scrollbars=0,resizable=0,copyhistory=0");
    vindue.focus();
}

function insertText(formname, textareaname, reptext) {
	if (document.forms[formname].elements[textareaname].createTextRange) {
		document.forms[formname].elements[textareaname].focus();
		document.selection.createRange().duplicate().text = reptext;
	} else if ((typeof document.forms[formname].elements[textareaname].selectionStart) != 'undefined') { // for Mozilla
		var tarea = document.forms[formname].elements[textareaname];
		var selEnd = tarea.selectionEnd;
		var txtLen = tarea.value.length;
		var txtbefore = tarea.value.substring(0,selEnd);
		var txtafter =  tarea.value.substring(selEnd, txtLen);
		var oldScrollTop = tarea.scrollTop;
		tarea.value = txtbefore + reptext + txtafter;
		tarea.selectionStart = txtbefore.length + reptext.length;
		tarea.selectionEnd = txtbefore.length + reptext.length;
		tarea.scrollTop = oldScrollTop;
		tarea.focus();
	} else {
		document.forms[formname].elements[textareaname].value += reptext;
		document.forms[formname].elements[textareaname].focus();
	}
}


function addText(formname, textareaname, wrap1, wrap2) {
	if (document.selection) { // for IE 
		var str = document.selection.createRange().text;
		document.forms[formname].elements[textareaname].focus();
		var sel = document.selection.createRange();
		sel.text = wrap1 + str + wrap2;
		return;
	} else if ((typeof document.forms[formname].elements[textareaname].selectionStart) != 'undefined') { // for Mozilla
		var txtarea = document.forms[formname].elements[textareaname];
		var selLength = txtarea.textLength;
		var selStart = txtarea.selectionStart;
		var selEnd = txtarea.selectionEnd;
		var oldScrollTop = txtarea.scrollTop;
		//if (selEnd == 1 || selEnd == 2)
		//selEnd = selLength;
		var s1 = (txtarea.value).substring(0,selStart);
		var s2 = (txtarea.value).substring(selStart, selEnd)
		var s3 = (txtarea.value).substring(selEnd, selLength);
		txtarea.value = s1 + wrap1 + s2 + wrap2 + s3;
		txtarea.selectionStart = s1.length;
		txtarea.selectionEnd = s1.length + s2.length + wrap1.length + wrap2.length;
		txtarea.scrollTop = oldScrollTop;
		txtarea.focus();
		return;
	} else {
		insertText(textareaname, wrap1 + wrap2);
	}
}