//This function set an array divs selected
function doOnMouseOver(arr){
	for (i=0; i < arr.length; i++){
		document.getElementById(arr[i]).style.textDecoration = 'underline';
	}
}
//This function unset an array divs selected
function doOnMouseOut(arr){
	for (i=0; i < arr.length; i++){
		document.getElementById(arr[i]).style.textDecoration = '';
	}
}