function miseEnForme(tagDebut,tagFin){

	var tArea= document.forms['newPost'].elements['message'];
	tArea.focus();
	
	//for Ie
	if(document.selection){
		
		var range = document.selection.createRange();
		var text = range.text;	
		range.text = tagDebut+range.text+tagFin;
		/* Ajustement de la position du curseur */
    	range = document.selection.createRange();
    	if (insText.length == 0) {
     		 range.move('character', -repfin.length);
    	} else {
     		 range.moveStart('character', repdeb.length + insText.length + repfin.length);
    	}
    	range.select();
		
	}else{
		if (typeof tArea.selectionStart != 'undefined') {
			
			debut = tArea.selectionStart;
			fin = tArea.selectionEnd;
			var text = tArea.value.substring(debut,fin);
			tArea.value = tArea.value.substring(0,debut)+tagDebut+text+tagFin+tArea.value.substring(fin);		
			  /* Ajustement de la position du curseur */
    		var pos;
    		if (text.length == 0) {
      			pos = debut + tagDebut.length;
    		} else {
      			pos = debut + tagDebut.length + text.length + tagFin.length;
    		}
   			tArea.selectionStart = pos;
    		tArea.selectionEnd = pos;
			
		}
		
	}
}