var vis = 1;
function cover() {
    var cover = document.getElementById('cover');
    var obj = document.getElementById('warning');
    var winY;

    var browserName = navigator.appName;
    if (browserName == "Microsoft Internet Explorer") {
        winY = document.documentElement.scrollTop;
    }
    else {
        winY = document.documentElement.scrollTop + "pt";
    }

    //obj.style.height = winY;
    obj.style.top = winY;

    if (vis) {
        vis = 0;
        //        var pageWidth = document.body.scrollWidth + 'px';

        var intPageHeight = document.body.scrollHeight - 179;
        var pageHeight;

        if (browserName == "Microsoft Internet Explorer") {
            pageHeight = intPageHeight;
        }
        else {
            pageHeight = intPageHeight + 'pt';
        }

        //        
        //        cover.style.width = pageWidth;
        cover.style.height = pageHeight;

        cover.style.display = 'block';
        obj.style.display = 'block';
    }
    else {
        vis = 1;
        cover.style.display = 'none';
        obj.style.display = 'none';
    }

}

function ValidateDrpNull(strValidateCtrl, strErrValidateFeild, strInvalidMsgTxt, strInValidFields) {
    var strCPH = "ctl00_ContentPlaceHolder1_";
    var blnRtn = true;

    if (document.getElementById(strCPH + strValidateCtrl).value == "" || document.getElementById(strCPH + strValidateCtrl).value == "None") {
        //Valid
        document.getElementById(strErrValidateFeild).style.display = '';
        document.getElementById(strErrValidateFeild).innerText = strInvalidMsgTxt;

        blnRtn = false;
    }
    else {
        //Invalid
        document.getElementById(strErrValidateFeild).style.display = 'none';
    }
    return blnRtn;
}

      function ValidateControlNull(strValidateCtrl, strErrValidateFeild, strInvalidMsgTxt, strInValidFields)
      {
          var strCPH = "ctl00_ContentPlaceHolder1_";
          var blnRtn = true;

        if (document.getElementById(strCPH + strValidateCtrl).value == "") {
            //Valid
            document.getElementById(strErrValidateFeild).style.display = '';
            document.getElementById(strErrValidateFeild).innerText = strInvalidMsgTxt;

            blnRtn = false;
        }
        else {
            //Invalid
            document.getElementById(strErrValidateFeild).style.display = 'none';
        }
        return blnRtn;
    }



function show_hide(divid) {

    var divTag = document.getElementById("DivLayer_" + divid).style.display;

    if (divTag == 'block' || divTag == '') {
        document.getElementById("DivLayer_" + divid).style.display = 'none';
        document.getElementById("ArrowLayer_" + divid).src = "img/ArrowDownLayer.gif"
    }
    else {
        document.getElementById("DivLayer_" + divid).style.display = 'block';
        document.getElementById("ArrowLayer_" + divid).src = "img/ArrowUpLayer.gif"
    }
}

function HeadMouseOver(headId, colour) {
    document.getElementById(headId).style.backgroundColor = colour;
}
function HeadMouseOut(headId, colour) {
    document.getElementById(headId).style.backgroundColor = colour;
}

//Validate Email addr format
function isValidEmail(strEmail, strErrValidateFeild, strInvalidMsgTxt, strInValidFields) {
    var strCPH = "ctl00_ContentPlaceHolder1_";

    validRegExp = /^[^@]+@[^@]+.[a-z]{2,}$/i;
    strEmail = document.getElementById(strCPH + strEmail).value;

    // search email text for regular exp matches
    if (strEmail.search(validRegExp) == -1) {
        //alert('A valid e-mail address is required.\nPlease amend and retry');
        //Invalid
        document.getElementById(strErrValidateFeild).style.display = '';
        document.getElementById(strErrValidateFeild).innerText = strInvalidMsgTxt;

        return false;
    }
    else {
        //Valid
        document.getElementById(strErrValidateFeild).style.display = 'none';
        return true;
    }
}





/* Valid date formate - START >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> */
var dtCh= "/";
var minYear=1920;
var maxYear=2000;

function isInteger(s){
	var i;
    for (i = 0; i < s.length; i++){   
        // Check that current character is number.
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    // All characters are numbers.
    return true;
}

function stripCharsInBag(s, bag){
	var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not in bag, append to returnString.
    for (i = 0; i < s.length; i++){   
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

function daysInFebruary (year){
	// February has 29 days in any year evenly divisible by four,
    // EXCEPT for centurial years which are not also divisible by 400.
    return (((year % 4 == 0) && ( (!(year % 100 == 0)) || (year % 400 == 0))) ? 29 : 28 );
}
function DaysArray(n) {
	for (var i = 1; i <= n; i++) {
		this[i] = 31
		if (i==4 || i==6 || i==9 || i==11) {this[i] = 30}
		if (i==2) {this[i] = 29}
   } 
   return this
}

function ValidateDate(strValidateCtrl, strErrValidateFeild, strInvalidMsgTxt, strInValidFields) {
    var strCPH = "ctl00_ContentPlaceHolder1_";
    var blnRtn = true;
    var dtStr = document.getElementById(strCPH + strValidateCtrl).value

	var daysInMonth = DaysArray(12)
	var pos1=dtStr.indexOf(dtCh)
	var pos2=dtStr.indexOf(dtCh,pos1+1)
	var strDay=dtStr.substring(0,pos1)
	var strMonth=dtStr.substring(pos1+1,pos2)
	var strYear=dtStr.substring(pos2+1)
	strYr=strYear
	if (strDay.charAt(0)=="0" && strDay.length>1) strDay=strDay.substring(1)
	if (strMonth.charAt(0)=="0" && strMonth.length>1) strMonth=strMonth.substring(1)
	for (var i = 1; i <= 3; i++) {
		if (strYr.charAt(0)=="0" && strYr.length>1) strYr=strYr.substring(1)
	}
	month=parseInt(strMonth)
	day=parseInt(strDay)
	year=parseInt(strYr)
	if (pos1==-1 || pos2==-1){
	    strInvalidMsgTxt = "The date format should be : dd/mm/yyyy";
		blnRtn = false;
	}
	if (strMonth.length<1 || month<1 || month>12){
	    strInvalidMsgTxt = "Please enter a valid month";
		blnRtn = false;
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
	    strInvalidMsgTxt = "Please enter a valid day";
		blnRtn = false;		
	}
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
	    strInvalidMsgTxt = "Please enter a valid 4 digit year between "+minYear+" and "+maxYear;
		blnRtn = false;
}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
	    strInvalidMsgTxt = "Please enter a valid date";
		blnRtn = false;
}

    if (blnRtn==false) {
        //Valid
        document.getElementById(strErrValidateFeild).style.display = '';
        document.getElementById(strErrValidateFeild).innerText = strInvalidMsgTxt;
    }
    else {
        //Invalid
        document.getElementById(strErrValidateFeild).style.display = 'none';
    }
    return blnRtn;
//return true
}

function ValidateForm(){
	var dt=document.frmSample.txtDate
	if (isDate(dt.value)==false){
		dt.focus()
		return false
	}
    return true
 }
 /* Valid date formate - END <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< */










//Display system message box
function sysDivMsg(intSysMsgTypeId, strDivSpnTxt) {
    //Make all not visible for a start
    var DivId = document.getElementById("MsgInfo");
    DivId.style.display = 'none';

    DivId = document.getElementById("MsgSuccess");
    DivId.style.display = 'none';

    DivId = document.getElementById("MsgWarning");
    DivId.style.display = 'none';

    DivId = document.getElementById("MsgError");
    DivId.style.display = 'none';

    var strSysDivSpnName = "";
    var strSysDivId = "";

    switch (intSysMsgTypeId) {
        case "1":
            strSysDivId = "MsgInfo";            
            strSysDivSpnName = "SpnMsgInfo";            
            viss = 1;
            break;
        case "2":
            strSysDivId = "MsgSuccess";
            strSysDivSpnName = "SpnMsgSuccess";
            viss = 1;
            break;
        case "3":
            strSysDivId = "MsgWarning";
            strSysDivSpnName = "SpnMsgWarning";
            viss = 1;
            break;
        case "4":
            strSysDivId = "MsgError";
            strSysDivSpnName = "SpnMsgError";
            viss = 1;
            break;
        default: //alert("I\'m sure it was great");
    }

    var DivIdMsgWarning = document.getElementById(strSysDivId);
    document.getElementById(strSysDivSpnName).innerHTML = strDivSpnTxt;

    if (viss) {
        viss = 0;
        DivIdMsgWarning.style.display = 'block';
    }
    else {
        viss = 1;
        DivIdMsgWarning.style.display = 'none';
    }
}