function formatText(el,tagstart,tagend) 
{
	if (el.setSelectionRange) 
  {
	  el.value = el.value.substring(0,el.selectionStart) + tagstart + el.value.substring(el.selectionStart,el.selectionEnd) + tagend + el.value.substring(el.selectionEnd,el.value.length)
	}
	/*else 
  {
		var selectedText = document.selection.createRange().text;
    if (selectedText != "") 
    { 
      var newText = tagstart + selectedText + tag; 
      document.selection.createRange().text = newText; 
    } 
	}*/
}

function ismaxlength(obj, maxlength)
{
  var mlength=maxlength;
  if (obj.getAttribute && obj.value.length>mlength)
    obj.value=obj.value.substring(0,mlength);
}