function deselection() {
	if (window.getSelection) {        // Firefox, Opera, Google Chrome and Safari
		var selection = window.getSelection();                                        
		selection.removeAllRanges();
	}
	else {
		if (document.selection.createRange) {        // Internet Explorer
			var range = document.selection.createRange();
			document.selection.empty();
		}
	}
}