// JavaScript Document

//------------------- Date Check -----------------------------------

var dtCh= "-";

var minYear=1900;

var maxYear=2100;



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 isDate(dtStr){

	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 (pos1==-1 || pos2==-1){

		//alert("The date format should be : mm-dd-yyyy")

		return false

	}

	if (strMonth.length<1 || month<1 || month>12){

		//alert("Please enter a valid month")

		return false

	}

	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){

		//alert("Please enter a valid day")

		return false

	}

	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){

		//alert("Please enter a valid 4 digit year between "+minYear+" and "+maxYear)

		return false

	}

	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){

		//alert("Please enter a valid date")

		return false

	}

return true

}

//-------------------------------------------------------------------



function checkdate(ec)

{

	

	var pickup_date = document.ec.pickup_month.value + "-" + document.ec.pickup_day.value  + "-" + document.ec.pickup_year.value;

 	

	if (isDate(pickup_date)==false){

 		alert("Please Enter Valid Pickup Date: "+ pickup_date);

		document.ec.pickup_day.focus();

		return false;

 	 } 

	 

	 var return_date = document.ec.return_month.value + "-" + document.ec.return_day.value  + "-" + document.ec.return_year.value;

 	 alert(return_date);

	 if (isDate(return_date)==false){

 		alert("Please Enter Valid Pickup Date: "+ pickup_date);

		document.ec.return_day.focus();

		return false;

 	 }  

	 return true;

}















function Trim(s) 

{

	// Remove leading spaces and carriage returns

	while ((s.substring(0,1) == ' ') || (s.substring(0,1) == '\n') || (s.substring(0,1) == '\r'))

	{ s = s.substring(1,s.length); }

	

	// Remove trailing spaces and carriage returns

	while ((s.substring(s.length-1,s.length) == ' ') || (s.substring(s.length-1,s.length) == '\n') || (s.substring(s.length-1,s.length) == '\r'))

	{ s = s.substring(0,s.length-1); }

	

	return s;

} 





function verifyEmail(str) {

	if(!str.match(/^[\w]{1}[\w\.\-_]*@[\w]{1}[\w\-_\.]*\.[\w]{2,6}$/i)) { 

            return false; 

	}

	return true; 

} 



function checkemail(esub)

{

	if (verifyEmail(esub.email.value) == false) {

        alert("Invalid e-mail address: Please enter a valid e-mail address");

		esub.email.focus();

        return false;

    }

	



}