var loaded = false;
if (document.images) {
    img1off = new Image();img1off.src = "images/topicn_home_off.jpg";
    img2off = new Image();img2off.src = "images/topicn_contact_off.jpg";
    img3off = new Image();img3off.src = "images/btn_granite_off.jpg";
	img4off = new Image();img4off.src = "images/btn_marble_off.jpg";
	img5off = new Image();img5off.src = "images/btn_silestone_off.jpg";
	img6off = new Image();img6off.src = "images/btn_caesarstone_off.jpg";
	img7off = new Image();img7off.src = "images/btn_edge_off.jpg";
	img8off = new Image();img8off.src = "images/btn_estimate_off.jpg";
	img9off = new Image();img9off.src = "images/btn_order_off.jpg";
	img10off = new Image();img10off.src = "images/btn_stonecare_off.jpg";
}
function imageLoad() {
    if (document.images) {
    img1on = new Image();img1on.src = "images/topicn_home_on.jpg";
    img2on = new Image();img2on.src = "images/topicn_contact_on.jpg";
    img3on = new Image();img3on.src = "images/btn_granite_on.jpg";
	img4on = new Image();img4on.src = "images/btn_marble_on.jpg";
	img5on = new Image();img5on.src = "images/btn_silestone_on.jpg";
	img6on = new Image();img6on.src = "images/btn_caesarstone_on.jpg";
	img7on = new Image();img7on.src = "images/btn_edge_on.jpg";
	img8on = new Image();img8on.src = "images/btn_estimate_on.jpg";
	img9on = new Image();img9on.src = "images/btn_order_on.jpg";
	img10on = new Image();img10on.src = "images/btn_stonecare_on.jpg";
        return (loaded = true);
    }
}
function rollOut(imgName) {
    if (document.images) {
        document[imgName].src = eval(imgName+"off.src");
    }
}
function rollIn(imgName) {
    if (document.images && (loaded == true)) {
        document[imgName].src = eval(imgName+"on.src");
    }
}

function ChkValidDate(frm, fieldName, fieldLabel, isRequired) {
	var msg = "";
	var day = eval("frm.lst_" + fieldName + "_day.value");
	var month = eval("frm.lst_" + fieldName + "_month.value");
	var year = eval("frm.lst_" + fieldName + "_year.value");
	var lastDay = "31";

	if (day == "" || month == "" || year == "") {
		msg = "Please select " + fieldLabel; 
	}
	else {
		if (parseInt(day) > GetLastDay(month, year)) {
			msg = "Invalid " + fieldLabel;
		}
	}
	return msg;
}

function GetLastDay(selectedMonth, selectedYear) {
	var month = selectedMonth;
	var year = parseInt(selectedYear);

	if (month.substr(0, 1) == "0") {
		month = month.substr(1, 1);
	}

	if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12) {
		lastDay = 31;
	}
	else if (month == 4 || month == 6 || month == 9 || month == 11) {
		lastDay = 30;
	}
	else if (month == 2) {
		if ((year%4) == 0) {
			lastDay = 29;
		}
		else {
			lastDay = 28;
		}
	}
	return lastDay;
}