function CheckUserLogin(i)
	{
	    if (i > 0) {
	        return true;
	    }
	    else {
	        alert("De favorietenlijst is alleen beschikbaar \nals u bent ingelogd!")
	        return false;
	    }
	}
	function ShowHide(index, rollengte) {
	    var docdiv = document.getElementById("vlm" + index);
	    var n1 = document.getElementById("artikelen_ctl0" + (index+1) + "_aantalbox");
	    var n2 = document.getElementById("artikelen_ctl0" + (index + 1) + "_vlmbox");
	    if (docdiv.style.display == "none") {
	        docdiv.style.display = "block"
	        document.getElementById("max" + index).innerText = n1.value;
	    }
	    else {
	        docdiv.style.display = "none"
	        n2.value = 0;
	        if ((n1.value % rollengte) != 0) {
	            document.getElementById("afrol" + index).style.display = "block";
	        }
	        else {
	            document.getElementById("afrol" + index).style.display = "none";

	        }
	    }
	}
	function ShowHide2(index) {
	    var docdiv = document.getElementById("vrs" + index);
	    if (docdiv.style.display == "none") {
	        docdiv.style.display = "block"
	       	    }
	    else {
	        docdiv.style.display = "none"
	        	    }
	        	}
	
	function n1_change(index, rollengte) {
	    var n1 = document.getElementById("artikelen_ctl0" + (index + 1) + "_aantalbox");
	    var n2 = document.getElementById("artikelen_ctl0" + (index + 1) + "_vlmbox");
	    document.getElementById("max" + index).innerText = n1.value;
	    if (parseInt(n2.value) > parseInt(n1.value)) {
	        n2.value = n1.value;
	    }
	    if ((n1.value % rollengte) != 0) {
	        document.getElementById("afrol" + index).style.display = "block";
	    }
	    else {
	        if ((n2.value % rollengte) != 0) {
	            document.getElementById("afrol" + index).style.display = "block";
	        }
	        else {
	            document.getElementById("afrol" + index).style.display = "none";

	        }
	    }
	    
	}
	function n2_change(index, rollengte) {
	    var n1 = document.getElementById("artikelen_ctl0" + (index + 1) + "_aantalbox");
	    var n2 = document.getElementById("artikelen_ctl0" + (index + 1) + "_vlmbox");
	    if (parseInt(n2.value) > parseInt(n1.value)) {
	        n2.value = n1.value;
	    }
	    if ((n2.value % rollengte) != 0) {
	        document.getElementById("afrol" + index).style.display = "block";
	    }
	    else {
	        if ((n1.value % rollengte) != 0) {
	            document.getElementById("afrol" + index).style.display = "block";
	        }
	        else {
	            document.getElementById("afrol" + index).style.display = "none";

	        }
	       
	    }
	  
	}