LA GLOBULE

function getCursorPosition(id) {

	var textarea = document.getElementById(id);

	if (typeof textarea.selectionStart != 'undefined' )

		return textarea.selectionStart;

	

	textarea.focus();

	var range = textarea.createTextRange();

	range.moveToBookmark(document.selection.createRange().getBookmark());

	range.moveEnd('character', textarea.value.length);

	return textarea.value.length - range.text.length;

}



function setCursorPosition(id, start, end) {

	var textarea = document.getElementById(id);

	end = end || start;

	textarea.focus();

	if (textarea.setSelectionRange) textarea.setSelectionRange(start, end);

	else if (document.selection) {

		var range = textarea.createTextRange();

		range.moveStart('character', start);

		range.moveEnd('character', - textarea.value.length + end);

		range.select();

	}

}



function insertTextarea(id, string) {

	var text_value = document.getElementById(id).value;

	var position = getCursorPosition(id);



	var string_start = text_value.substring(0, position);

	var string_end = text_value.substring(position);



	document.getElementById(id).value = string_start + string + string_end;

	setCursorPosition(id, position + string.length, position + string.length);

}