//--------------------------------------------

// MOZILLA TEXT SELECTION LIBRARY

//--------------------------------------------

function moz_getSelectionStart(element) {

	var startpos = 0;

	startpos = element.selectionStart;

	return startpos;

}



function moz_getSelectionEnd(element) {

	var endpos = 0;

	endpos = element.selectionEnd; 

	return endpos;



}



function moz_setSelectionStart(element,newposition) {

	element.selectionStart = newposition; 

}





function moz_setSelectionEnd(element,newposition) {

	element.selectionEnd = newposition; 

}



function moz_setSelection(element,newstart,newend) {

	setSelectionStart(element,newstart);

	setSelectionEnd(element,newend);

}



// Inserts a string at a given position

function moz_stringInsert(DOMEle,newtext,newpos) {

	DOMEle.value = DOMEle.value.slice(0,newpos) + newtext + DOMEle.value.slice(newpos);

}

function moz_markSelected(element,tag) {

	var startTag = "[" + tag + "]";

	var endTag	 = "[/" + tag + "]";

	var firstPos = moz_getSelectionStart(element);

	 // we're inserting one at a time

        var secondPos = moz_getSelectionEnd(element)+ startTag.length;

	moz_stringInsert(element,startTag,firstPos);

	moz_stringInsert(element,endTag,secondPos);

	

	// reset focus... after the first tag and before the second 

	moz_setSelectionStart(element,firstPos + startTag.length);

	moz_setSelectionEnd(element,secondPos);

	element.focus();	

}