function getHighlightedText() {
	var str = ''
	if (document.getSelection) {
	    str = document.getSelection();
	  } else if (document.selection && document.selection.createRange) {
	    var range = document.selection.createRange();
	    str = range.text;
	  } else {
	    str = getSelection();
	  }
	if (str == '') {
		str = document.body.innerHTML;
	}
	return str;
}