function selectText(elm) { 
   elm.select(); 

} 


function getSelectedText(elm) { 
   // this one is used especially for a XUL environment 
   if (!elm && document.commandDispatcher && 
document.commandDispatcher.focusedElement) { 
     elm = document.commandDispatcher.focusedElement; 
   } 
   if (elm && elm.setSelectionRange) 
     return elm.value.substring(elm.selectionStart, elm.selectionEnd); 
   else if (document.selection) 
     return document.selection.createRange().text; 


} 


function setSelectedTextRange(elm, selectionStart, selectionEnd) { 
   if (elm.setSelectionRange) { 
     elm.focus(); 
     elm.setSelectionRange(selectionStart, selectionEnd); 
   } 
   else if (elm.createTextRange) { 
     var range = elm.createTextRange(); 
     range.collapse(true); 
     range.moveEnd('character', selectionEnd); 
     range.moveStart('character', selectionStart); 
     range.select(); 
   } 

} 


function setCaretToEnd (elm) { 

   setSelectedTextRange(elm, elm.value.length, elm.value.length); 

} 


function setCaretToStart (elm) { 
   setSelectedTextRange(elm, 0, 0); 

} 


function setCaretToPos (elm, pos) { 
   setSelectedTextRange(elm, pos, pos); 


} 


function getCaretPosition(elm) { 
        if (typeof elm.selectionStart != "undefined") 
        return elm.selectionStart; 
   else if (document.selection) 
     return 
Math.abs(document.selection.createRange().moveStart("character",-1000000)); 


} 


function selectString (elm, string) { 
   var match = new RegExp(string, "i").exec(elm.value); 
   if (match) { 
     setSelectedTextRange (elm, match.index, match.index + match[0].length); 
   } 


} 


function replaceSelectedText (elm, replaceString) { 
        var isInput = isInList(elm.nodeName.toLowerCase(),"input,textarea"); 
   if (isInput && elm.setSelectionRange) { 
     var selectionStart = elm.selectionStart; 
     var selectionEnd = elm.selectionEnd; 
     elm.value = elm.value.substring(0, selectionStart) + replaceString 
+ elm.value.substring(selectionEnd); 
     if (selectionStart != selectionEnd) // has there been a selection 
       setSelectedTextRange(elm, selectionStart, selectionStart + 
replaceString.length); 
     else // set caret 
       setCaretToPos(elm, selectionStart + replaceString.length); 
   } 
//  else if (!isInput && elm.ownerDocument) { 
//      elm.ownerDocument.defaultView.getSelection().deleteFromDocument() { 
//  } 
   else if (document.selection) { 
     var range = document.selection.createRange(); 
     if (range.parentElement() == elm) { 
       var isCollapsed = range.text == ''; 
       range.text = replaceString; 
       if (!isCollapsed)  { // there has been a selection 
         //it appears range.select() should select the newly 
         //inserted text but that fails with IE 
         range.moveStart('character', -replaceString.length); 
         range.select(); 
       } 
     } 
   } 
}
// JavaScript Document