function saveCaret(elem)
{
if ( elem.isTextEdit )
   elem.caretPos = document.selection.createRange();
}
function getCaretPos(elem)
{
var cur_posv = document.getElementById("cur_pos");
if ( elem.isTextEdit && elem.caretPos)
{
   var bookmark = "~";
   var orig = elem.value;
   var caretPos = elem.caretPos;
   caretPos.text = bookmark;
   var i = elem.value.search( bookmark );
   cur_posv.value = i;
   elem.value = orig;
}
else
{
cur_posv.value = 0;
}
}