function checkEmail (strng) {
var error="";
if (strng == "") {
   error = "- Please enter an email address.<br>";
}

    var emailFilter=/^.+@.+\..{2,3}$/;
    if (!(emailFilter.test(strng))) { 
       error = "- Please enter a valid email address.<br>";
    }
    else {
//test email for illegal characters
       var illegalChars= /[\(\)\<\>\,\;\:\\\"\[\]]/
         if (strng.match(illegalChars)) {
          error = "- The email address contains illegal characters.<br>";
       }
    }
return error;    
}


// phone number - strip out delimiters and check for 10 digits

function checkPhone (strng) {
var error = "";
if (strng == "") {
   error = "- Please enter a phone number.<br>";
}
else{
var stripped = strng.replace(/[\(\)\.\-\ ]/g, ''); //strip out acceptable non-numeric characters
    if (isNaN(parseInt(stripped))) {
       error = "- The phone number contains illegal characters.<br>";
  
    }
}
  return error;
}


// text box 

function checkText (Type,reqLen,strng) {
var error = "";
if (strng == "" || strng.length <= reqLen) {
	  error = "- Please enter: "+Type+".<br>"
}
return error;
}       



/*check for US date*/
var dtCh= "/";
var minYear=2008;
var maxYear=2008;

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 isUSDate(dtStr){
var error=""
	var daysInMonth = DaysArray(12)
	var pos1=dtStr.indexOf(dtCh)
	var pos2=dtStr.indexOf(dtCh,pos1+1)
	var strMonth=dtStr.substring(0,pos1)
	var strDay=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(dtStr==""){
		error+="- Please enter: Date services needed. <br>"
		}
	else{
		if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
			error+="- Please enter a valid date. <br>"
			
		}
		if (pos1==-1 || pos2==-1){
			error+="- The date format should be : mm/dd/yyyy. <br>"
			
		}
		var Flag=0;
		if (strMonth.length<1 || month<1 || month>12){
			error+="- Please enter a valid month. <br>";
			Flag=1;
		}
		if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
			error+="- Please enter a valid day. <br>";
			Flag=1;
			
		}
		if(Flag){
		error+="- The date format should be : mm/dd/yyyy. <br>"	
			}
		if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
			error+="- Please enter a valid 4 digit year between "+minYear+" and "+maxYear+". <br>"
		}
	}
return error;
}


/*Reg functions*/
function NoSelected(elmName,selectedV){
var err=""
if(selectedV=="0"){
err="- Please select "+elmName+"<br>"
}
return err
}
function markErr(Str,objID,func){
var Error=""
    switch (func){
        case "NoSelected":
        Error=NoSelected(Str,$(objID).options[$(objID).selectedIndex].value)
        break;
        case "checkText":
        var Str_array=Str.split(",");
        Error=checkText(Str_array[0],Str_array[1],$(objID).value);
        break;
        case "checkPhone":
        Error=checkPhone($(objID).value)
        break;
        case "checkEmail":
        Error=checkEmail($(objID).value)
        break;
        case "checkPassword":
        Error=checkPassword($(objID).value,$(Str).value)
        break;
        case "isUSDate":
        Error=isUSDate($(objID).value)
        break;
        case "checkRadio":
        Error=checkRadio(objID,Str)
        break;
        case "isInteger":
        if (!isInteger($(objID).value)){Error="-Please fill "+Str+" with numeric value"}
        break;
    }
if(Error!=""){
$S(objID+"e").background="url(images/icons/err.gif) no-repeat"
    if(func=="checkPassword"){$S(Str+"e").background="url(images/icons/err.gif) no-repeat"}
    }
    else{
    $S(objID+"e").background=""
    if(func=="checkPassword"){$S(Str+"e").background=""}
    }
return Error
}
function checkPassword(Psw1,Psw2){
var Err=""
if(Psw1==""){
					Err = "- Please enter password.<br>"
				}
				else{
					if(Psw1!=Psw2){
						Err = "- Please retype Password : Passwords do not match.<br>"
					}
				}
return Err
}

function checkRadio(objID,Str) {
var radios=document.getElementsByName(objID)
Err="- Please select at least one "+Str+"."
     for (var i=0; i <radios.length; i++) {
          if (radios[i].checked && Err!="") {
           Err=""
           }
     }
     return Err
}
function checkWholeForm(theForm) {	
	var why = "";
	if(theForm=="Register"){
		why +=markErr("Register Type","RegisterT","NoSelected")
			if($("RegisterT").options[$("RegisterT").selectedIndex].value=="1"){
				why += markErr("Company Name,2","CompanyN","checkText");
				why += markErr("Business Des.,3","BusinessD","checkText");
				//why +=  markErr("Website,4","Website","checkText");
				}
				else{
				$S("BusinessDe").background=""
				$S("CompanyNe").background=""
				}
				why += markErr("Address","Address","checkText");
				why += markErr("Contact Person","ContactP","checkText");
				//why += checkText("Fax,7",$("Fax").value);
				why += markErr("Phone","Phone","checkPhone");
				why += markErr("Email","Email","checkEmail");
				why += markErr("Estimated Annual Shipments.","EAS","NoSelected");
				why += markErr("Preparation of goods.","POG","NoSelected");
				why += markErr("pick up at Origin?","PUO","NoSelected");
				why += markErr("delivery at Destination?","DAD","NoSelected");
				why += markErr("Password2","Password1","checkPassword")
				if(why!=""){
					//$("RErr").innerHTML=why
					$("RErr").innerHTML="- Please check the fields marked below and try again."
				}
				else{
					$("RErr").innerHTML="&nbsp;"
					SQ_BoxTOG(0,'Register');
					SendLogin('Register','')
				}
	}
	if(theForm.indexOf('BLform')!=-1){
		why = ""
		TruckErr=""
		if (theForm.indexOf('BLformTrucking')<0){
			why += markErr("Datesn","Datesn","isUSDate");
			flagT=true
			try{
				xd=$S("Trucking")
			}
			catch(e){
				flagT=false
			}
         }
		else{///is BLformTrucking
		flagT=false
			if (document.getElementById('carrierSel')){
            $("Truckinge").innerHTML=""
				why += markErr("Carrier","carrierSel","checkRadio")
			}
			else{
				//check the trucking form (not submited yet)
				$S("Truckinge").background="url(images/icons/err.gif) no-repeat"
				TruckErr = "-Please fill Pickup information and check for available Carriers"
				$("Truckinge").innerHTML=TruckErr
				why += "<br>"+TruckErr
			}	
		}		
		if (flagT) {
			$S("Truckinge").background=""
			if($("Trucking").checked ){
					if (document.getElementById('carrierSel')){
					why += markErr("Carrier","carrierSel","checkRadio")
					}	
					else{
						//check the tucking form (not submited yet)
						$S("Truckinge").background="url(images/icons/err.gif) no-repeat"
						TruckErr = "-Please fill Pickup information and check for available Carriers"
						why += "<br>"+TruckErr
					}
            }
            else{
            // no pickup needed
            }
        } 
        else {
        //no trucking!
        }
        flagTbl=true
        try{
				xd=$S("Commodity")
			}
			catch(e){
				flagTbl=false
			}
        if(flagTbl){
		why += markErr("Commodity,2","Commodity","checkText");
		why += markErr("NumbPieces,0","NumbPieces","checkText");
		why += markErr("EValue,0","EValue","checkText");
		why += markErr("SName,2","SName","checkText");
		why += markErr("SAddress,3","SAddress","checkText");
		why += markErr("STelephone,2","STelephone","checkText");
		why += markErr("SEmail","SEmail","checkEmail");
		why += markErr("CName,2","CName","checkText");
		why += markErr("CAddress,3","CAddress","checkText");
		why += markErr("CTelephone,2","CTelephone","checkText");
		why += markErr("CEmail","CEmail","checkEmail");
        }
				if(why!=""){
			RErrStr="- Please check the fields marked above and try again."
					if(TruckErr!=""){
					RErrStr=RErrStr+"<br>"+TruckErr
					}
					$("RErr").innerHTML=RErrStr
					return false;
				}
				else{
					$("RErr").innerHTML=" "
					return true;
				}
	}
}
// Remove all spaces from a string
function removeSpaces(string) {
   var newString = '';
   for (var i = 0; i < string.length; i++) {
      if (string.charAt(i) != ' ') newString += string.charAt(i);
   }
   return newString;
}

// Check that a US zip code is valid
function isValidZipcode(zipcode) {
   zipcode = removeSpaces(zipcode);
   if (!(zipcode.length == 5 || zipcode.length == 9 || zipcode.length == 10)) return false;
   if ((zipcode.length == 5 || zipcode.length == 9) && !isNumeric(zipcode)) return false;
   if (zipcode.length == 10 && zipcode.search && zipcode.search(/^\d{5}-\d{4}$/) == -1) return false;
   return true;
}

// Check that a Canadian postal code is valid
function isValidPostalcode(postalcode) {
   if (postalcode.search) {
      postalcode = removeSpaces(postalcode);
      if (postalcode.length == 6 && postalcode.search(/^[a-zA-Z]\d[a-zA-Z]\d[a-zA-Z]\d$/) != -1) return true;
      else if (postalcode.length == 7 && postalcode.search(/^[a-zA-Z]\d[a-zA-Z]-\d[a-zA-Z]\d$/) != -1) return true;
      else return false;
   }
   return true;
}


function checkTuckingajax(isTruckingonly) {
why =""
DatesnErr="" 
why += markErr("Weight,0","weight1","checkText")
if (why==""){
why += markErr("weight","weight1","isInteger")
}
if(markErr("Datesn","Datesn","isUSDate")!=""){
DatesnErr ="<br>-Please specify Date services needed"
why +=DatesnErr
}
Pallet1Err= markErr("Pallets,0","Pallet1","checkText")
if(Pallet1Err==""){
Pallet1Err= markErr("Pallets","Pallet1","isInteger")
}
if(Pallet1Err==""){
if($("Pallet1").value=="0"){Pallet1Err= markErr("Pallets,100","Pallet1","checkText")}

}
if(isTruckingonly==1){
why += markErr("To zip code,4","tozip","checkText");
$("Truckinge").innerHTML=""
}
why += markErr("From zip code,4","fromzip","checkText");
why +=Pallet1Err
	if (why !=""){
		$("errordiv").innerHTML="-Please fill Pickup information and check for available Carriers"+DatesnErr
		 return false;
	}
	else{
		$("errordiv").innerHTML=" "
		 return true;
	}
}