js sofiane

// LUNDI
var allOptionsL = document.querySelectorAll('#sLundi > option') //

        for (var i = 0; i < allOptionsL.length; i++) {
            allOptionsL[i].addEventListener('mouseover', highlightL);
        }

        function highlightL() {

            for (var i = 0; i < allOptionsL.length; i++) {
                allOptionsL[i].style.backgroundColor = ""; //
            }
            this.style.backgroundColor = "lightgray";
        }

// MARDI
var allOptionsM = document.querySelectorAll('#sMardi > option') //

        for (var i = 0; i < allOptionsM.length; i++) {
            allOptionsM[i].addEventListener('mouseover', highlightM);
        }

        function highlightM() {

            for (var i = 0; i < allOptionsM.length; i++) {
                allOptionsM[i].style.backgroundColor = ""; //
            }
            this.style.backgroundColor = "lightgray";
        }

// MERCREDI
var allOptionsMer = document.querySelectorAll('#sMercredi > option') //

        for (var i = 0; i < allOptionsMer.length; i++) {
            allOptionsMer[i].addEventListener('mouseover', highlightMer);
        }

        function highlightMer() {

            for (var i = 0; i < allOptionsMer.length; i++) {
                allOptionsMer[i].style.backgroundColor = ""; //
            }
            this.style.backgroundColor = "lightgray";
        }

// JEUDI
var allOptionsJ = document.querySelectorAll('#sJeudi > option') //

        for (var i = 0; i < allOptionsJ.length; i++) {
            allOptionsJ[i].addEventListener('mouseover', highlightJ);
        }

        function highlightJ() {

            for (var i = 0; i < allOptionsJ.length; i++) {
                allOptionsJ[i].style.backgroundColor = "";
            }
            this.style.backgroundColor = "lightgray";
        }

//VENDREDI
var allOptionsV = document.querySelectorAll('#sVendredi > option')

        for (var i = 0; i < allOptionsV.length; i++) {
            allOptionsV[i].addEventListener('mouseover', highlightV);
        }

        function highlightV() {

            for (var i = 0; i < allOptionsV.length; i++) {
                allOptionsV[i].style.backgroundColor = "";
            }
            this.style.backgroundColor = "lightgray";
        }