var dtCh= "/";

function SetLostFocus(objectid)
{
	//alert('SetLostFocus: ' + objectid);
	var objFocus = document.getElementById(objectid);
	if (objFocus) {
		//alert('Khac NULL');
		objFocus.blur();
	}
}

function ValidateSearchForm(searchFormID, warningMsg)
{
	var objSearchForm = document.getElementById(searchFormID);
	var searchValue = objSearchForm.value;
	if (trim(searchValue) == "") {
		alert(warningMsg);
		objSearchForm.value = "";
		objSearchForm.focus();
		return false;
	}
	return true;
}

function CollapseOrExpandSpan(spanID, tblID, collapseTitle, expandTitle)
{
	var objSpan = document.getElementById(spanID);
	var objTable = document.getElementById(tblID);
	if (objSpan.title == collapseTitle) {
		objSpan.title = expandTitle;
		objTable.style.display = "none";
	} else {
		objSpan.title = collapseTitle;
		objTable.style.display = "";
	}
	return false;
}

function SetHindForSpan(spanID, collapseTitle, expandTitle)
{
	var objSpan = document.getElementById(spanID);
	if (objSpan.title == collapseTitle)
		objSpan.title = expandTitle;
	else
		objSpan.title = collapseTitle;
}

function CollapseOrExpand(btnId, objId)
{
	var objBtn = document.getElementById(btnId);
	var strMinus = "minus.gif";
	if (objBtn.src.indexOf(strMinus) != -1)
		Collapse(btnId, objId);
	else
		Expand(btnId, objId);
	return false;
}

function Collapse(btnId, collapsedObjId) {
	var objBtn = document.getElementById(btnId);
	var objCollapsed = document.getElementById(collapsedObjId);
	
	objBtn.src = "images/plus.gif";
	objCollapsed.style.display = "none";
}

function Expand(btnId, expandedObjId) {
	var objBtn = document.getElementById(btnId);
	var objExpanded = document.getElementById(expandedObjId);
	objBtn.src = "images/minus.gif";
	objExpanded.style.display = "";
}

function CheckBox_CheckedChange(checkBoxId, uploadedCtrlId)
{
	var objCheckBox = document.getElementById(checkBoxId);
	var objUploadedCtrl = document.getElementById(uploadedCtrlId);
		
	var bChecked = objCheckBox.checked;
	if (bChecked == true) {
		objUploadedCtrl.disabled = false;
	} else {
		objUploadedCtrl.disabled = true;
	}
}

function ConvertDMY2MDY(strDMYDate)
{
	var dArray;
	var d, m, y;
	
	dArray = strDMYDate.split("/");
	d = parseInt(dArray[0], 10);
    m = parseInt(dArray[1], 10);
    y = parseInt(dArray[2], 10);
    
    var a = m + "/" + d + "/" + y;
    //alert(a);
    return a;
}

function CompareDate(dtStr1, dtStr2)	// dtStr1 is depart date, dtStr2 is return date
{
	//alert('CompareDate called.');
	//alert('dtCh = ' + dtCh);
	var pos1_1 = dtStr1.indexOf(dtCh);
	//alert('pos1_1 = ' + pos1_1);
	var pos1_2 = dtStr1.indexOf(dtCh,pos1_1+1);
	//alert('pos1_2 = ' + pos1_2);
	
	var strMonth1 = dtStr1.substring(0,pos1_1);
	if (strMonth1.charAt(0)=="0" && strMonth1.length>1)
		strMonth1 = strMonth1.substring(1);
	//alert('strMonth1 = ' + strMonth1);
		
	var strDay1 = dtStr1.substring(pos1_1+1,pos1_2);
	if (strDay1.charAt(0) == "0" && strDay1.length>1)
		strDay1 = strDay1.substring(1);
	//alert('strDay1 = ' + strDay1);
		
	var strYear1 = dtStr1.substring(pos1_2+1);
	for (var i = 1; i <= 3; i++) {
		if (strYear1.charAt(0) == "0" && strYear1.length>1) 
			strYear1 = strYear1.substring(1);
	}
	//alert('strYear1 = ' + strYear1);
	
	var month1 = parseInt(strMonth1);
	//alert('month1 = ' + month1);
	var day1 = parseInt(strDay1);
	//alert('day1 = ' + day1);
	var year1 = parseInt(strYear1);
	//alert('year1 = ' + year1);
	
	var pos2_1 = dtStr2.indexOf(dtCh);
	//alert('pos2_1 = ' + pos2_1);
	var pos2_2 = dtStr2.indexOf(dtCh,pos2_1+1);
	//alert('pos2_2 = ' + pos2_2);
	
	var strMonth2 = dtStr2.substring(0,pos2_1);
	if (strMonth2.charAt(0)=="0" && strMonth2.length>1)
		strMonth2 = strMonth2.substring(1);
	//alert('strMonth2 = ' + strMonth2);
		
	var strDay2 = dtStr2.substring(pos2_1+1,pos2_2);
	if (strDay2.charAt(0) == "0" && strDay2.length>1)
		strDay2 = strDay2.substring(1);
	//alert('strDay2 = ' + strDay2);
		
	var strYear2 = dtStr2.substring(pos2_2+1);
	for (var i = 1; i <= 3; i++) {
		if (strYear2.charAt(0) == "0" && strYear2.length>1) 
			strYear2 = strYear2.substring(1);
	}
	//alert('strYear2 = ' + strYear2);
	
	var month2 = parseInt(strMonth2);
	var day2 = parseInt(strDay2);
	var year2 = parseInt(strYear2);
	
	if (year1 > year2)
		return false;
	if (year1 < year2)
		return true;
	
	if (month1 > month2)
		return false;
	if (month1 < month2)
		return true;
	
	if (day1 > day2)
		return false;
	return true;
}

function trim(inputString) 
{
	// Removes leading and trailing spaces from the passed string. Also removes
	// consecutive spaces and replaces it with one space. If something besides
	// a string is passed in (null, custom object, etc.) then return the input.
	if (typeof inputString != "string") { return inputString; }
	
	var retValue = inputString;
	var ch = retValue.substring(0, 1);
		
	while (ch == " ") { 
		// Check for spaces at the beginning of the string
		retValue = retValue.substring(1, retValue.length);
		ch = retValue.substring(0, 1)
	}
	
	ch = retValue.substring(retValue.length-1, retValue.length);
	while (ch == " ") { 
		// Check for spaces at the end of the string
		retValue = retValue.substring(0, retValue.length-1);
		ch = retValue.substring(retValue.length-1, retValue.length);
	}
	
	while (retValue.indexOf("  ") != -1) {
		// Note that there are two spaces in the string - look for multiple spaces within the string
		retValue = retValue.substring(0, retValue.indexOf("  ")) + retValue.substring(retValue.indexOf("  ")+1, retValue.length);
		// Again, there are two spaces in each of the strings
	}
	
	return retValue; // Return the trimmed string back to the user
} // Ends the "trim" function

function emailCheck (emailStr, strIncorrectEmail, strInvalidUsername, strInvalidDesIP, strInvalidDomainName, strInvalidDomainExt, strMissingHostName) {
	/* The following pattern is used to check if the entered e-mail address fits the user@domain format.
	 *  It also is used to separate the username from the domain.
     */
	var emailPat=/^(.+)@(.+)$/;
	/* The following string represents the pattern for matching all special characters.  We don't want to
	 * allow special characters in the address. These characters include ( ) < > @ , ; : \ " . [ ]
	 */
	var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]";
	/* The following string represents the range of characters allowed in a username or domainname.
	 * It really states which chars aren't allowed.
	 */
	var validChars="\[^\\s" + specialChars + "\]";
	/* The following pattern applies if the "user" is a quoted string (in which case, there are no
	 * rules about which characters are allowed and which aren't; anything goes).
	 * E.g. "jiminy cricket"@disney.com is a legal e-mail address.
	 */
	var quotedUser="(\"[^\"]*\")";
	/* The following pattern applies for domains that are IP addresses, rather than symbolic names.
	 * E.g. joe@[123.124.233.4] is a legal e-mail address. NOTE: The square brackets are required.
	 */
	var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/;
	/* The following string represents an atom (basically a series of non-special characters.)
	 */
	var atom=validChars + '+';
	/* The following string represents one word in the typical username. For example, in john.doe@somewhere.com,
	 * john and doe are words. Basically, a word is either an atom or quoted string.
	 */
	var word="(" + atom + "|" + quotedUser + ")";
	// The following pattern describes the structure of the user
	var userPat=new RegExp("^" + word + "(\\." + word + ")*$");
	/* The following pattern describes the structure of a normal symbolic domain, as opposed to ipDomainPat, shown above.
	 */
	var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$");


	/* Finally, let's start trying to figure out if the supplied address is valid.
	 */

	/* Begin with the coarse pattern to simply break up user@domain into different pieces that are easy to analyze.
	 */
	var matchArray=emailStr.match(emailPat);
	if (matchArray==null) {
		/* Too many/few @'s or something; basically, this address doesn't even fit the general mould of a valid e-mail address.
		 */
		//alert("Email address seems incorrect (check @ and .'s)")
		alert(strIncorrectEmail);
		return false;
	}
	var user=matchArray[1];
	var domain=matchArray[2];

	// See if "user" is valid 
	if (user.match(userPat)==null) {
		// user is not valid
		//alert("The username doesn't seem to be valid.")
		alert(strInvalidUsername);
		return false
	}

	/* if the e-mail address is at an IP address (as opposed to a symbolic host name) make sure the IP address is valid.
	 */
	var IPArray=domain.match(ipDomainPat);
	if (IPArray!=null) {
		// this is an IP address
		for (var i=1;i<=4;i++) {
			if (IPArray[i]>255) {
				//alert("Destination IP address is invalid!")
				alert(strInvalidDesIP);
				return false;
			}
		}
		return true;
	}

	// Domain is symbolic name
	var domainArray=domain.match(domainPat);
	if (domainArray==null) {
		//alert("The domain name doesn't seem to be valid.")
		alert(strInvalidDomainName);
		return false;
	}

	/* domain name seems valid, but now make sure that it ends in a three-letter word (like com, edu, gov) or a two-letter word,
	 * representing country (uk, nl), and that there's a hostname preceding the domain or country.
	 */

	/* Now we need to break up the domain to get a count of how many atoms it consists of.
	 */
	var atomPat=new RegExp(atom,"g");
	var domArr=domain.match(atomPat);
	var len=domArr.length;
	if (domArr[domArr.length-1].length<2 || 
		domArr[domArr.length-1].length>3) {
		// the address must end in a two letter or three letter word.
		//alert("The address must end in a three-letter domain, or two letter country.")
		alert(strInvalidDomainExt);
		return false;
	}

	// Make sure there's a host name preceding the domain.
	if (len<2) {
		//var errStr="This address is missing a hostname!"
		//alert(errStr)
		alert(strMissingHostName);
		return false;
	}

	// If we've gotten this far, everything's valid!
	return true;
}

function openNewWindow(strUrl) {
    if ((strUrl != null) && 
        ((strUrl.indexOf("http://") != 0) || (strUrl.indexOf("https://") != 0) || (strUrl.indexOf("ftp://") != 0)))
	    strUrl = "http://" + strUrl;
	window.open(strUrl, '' ,'toolbar=yes,location=yes,directories=yes,status=yes,menubar=yes,scrollbars=yes,copyhistory=yes,resizable=yes');
	return false;
}

function splitDateStringNew(dateString)
{
    var dArray;
    if (dateString.indexOf("/") >= 0)
        dArray = dateString.split("/");
    else
        dArray = false;
      
    return dArray;
}
    
function validateParsedDate(dateVal, t_day, t_month, t_year)
{
    if (dateVal.getDate() != t_day) 
        return false;
    if (dateVal.getMonth() != t_month) 
        return false;
    if (dateVal.getFullYear() != t_year) 
        return false;
    return true;
}

function validateFormatOfDate(dateString)
{
    var bIsValidDate = true;
    var dateVal;
	    
    try {
        var d, m, y;
	    var dArray = splitDateStringNew(dateString);
	        
	    if (dArray) {
	        // dmy
	        if (dArray.length != 3)
	            return false;	
	        if (dArray[0].length != 2)
	            return false;            
	        if (dArray[1].length != 2)
	            return false; 
	        if (dArray[2].length != 4)
	            return false; 
	        
	        d = parseInt(dArray[0], 10);
	        if (isNaN(d))
	            bIsValidDate = false;
	        else if ((d < 1) || (d > 31))
	            bIsValidDate = false;
	                
            m = parseInt(dArray[1], 10) - 1;
            if (isNaN(m))
	            bIsValidDate = false;
	        else if ((m < 0) || (m > 11))
	            bIsValidDate = false;

            y = parseInt(dArray[2], 10);
            var t = new Date();
            var t_year = t.getFullYear();  // Returns 4 digit year
            if (isNaN(y))
	            bIsValidDate = false;
	        else if ((y <= 1900) || (y > t_year))
	            bIsValidDate = false;

            if (bIsValidDate) {
                dateVal = new Date(y, m, d);
                if (!validateParsedDate(dateVal, d, m, y))
                    bIsValidDate = false;
            }
	    } else {
	        bIsValidDate = false;
	    }
	} catch (e) {
	    bIsValidDate = false;
	}
    if (isNaN(dateVal))
        bIsValidDate = false;
    return bIsValidDate;
}