function validate_form()

{

	if(document.ballpark.emailAddress.value==null||document.ballpark.emailAddress.value==""){

	 alert("Email Address is required field!");

	 document.ballpark.emailAddress.focus();

	 return false

	}

	else

	{

		var email = document.ballpark.emailAddress.value;

		if !(echeck(email)){

			return false;

		}

		else{

			return true;

		}

	}

	if(document.ballpark.originZip.value==null||document.ballpark.originZip.value==""){

	 alert("Origin Zip is required field!");

	 document.ballpark.originZip.focus();

	 return false

	}

	else{

		var zip = document.ballpark.originZip.value;

		var type = "Origin Zip"

		if(validateZIP(zip,type)){

		}

		else{

		 document.ballpark.originZip.focus();

	 	 return false

		}

	}

	if(document.ballpark.destinationZip.value==null||document.ballpark.destinationZip.value==""){

	 alert("Destination Zip is required field!");

	 document.ballpark.destinationZip.focus();

	 return false

	}

	else {

	var zip = document.ballpark.destinationZip.value;

	var type = "Destination Zip"

	if(validateZIP(zip,type)){

		}

	else{

		 document.ballpark.destinationZip.focus();

	 	 return false

	 }

	}

	if(document.ballpark.moveDate.value==null||document.ballpark.moveDate.value==""){

	 alert("Move Date is required field!");

	 document.ballpark.moveDate.focus();

	 return false

	}else if(document.ballpark.moveDate.value.length!=10){

		alert("Invalid Move Date!. Valid format is mm/dd/yyyy");

		 document.ballpark.moveDate.focus();

	 	return false

	}

	else{

		var date=document.ballpark.moveDate.value;

		if (isDate(date)==false){

				document.ballpark.moveDate.focus();

				return false

		}

	}

	if(document.ballpark.moveSize.value==null||document.ballpark.moveSize.value==""){

	 alert("Move Size is required field!");

	 document.ballpark.moveSize.focus();

	 return false

	}else{

		return true

	}

}

function echeck(str) {



		var at="@"

		var dot="."

		var lat=str.indexOf(at)

		var lstr=str.length

		var ldot=str.indexOf(dot)

		if (str.indexOf(at)==-1){

		  alert("Invalid Email Address")

		  document.ballpark.emailAddress.focus();

		  return false

		}



		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){

		  alert("Invalid Email Address")

		  document.ballpark.emailAddress.focus();

		  return false

		}



		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){

		  alert("Invalid Email Address")

		  document.ballpark.emailAddress.focus();

		  return false

		}



		 if (str.indexOf(at,(lat+1))!=-1){

		  alert("Invalid Email Address")

		  document.ballpark.emailAddress.focus();

		  return false

		 }



		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){

		  alert("Invalid Email Address")

		  document.ballpark.emailAddress.focus();

		  return false

		 }



		 if (str.indexOf(dot,(lat+2))==-1){

		  alert("Invalid Email Address")

		  document.ballpark.emailAddress.focus();

		  return false

		 }



		 if (str.indexOf(" ")!=-1){

		  alert("Invalid Email Address")

		  document.ballpark.emailAddress.focus();

		  return false

		 }



 		 return true

	}

	function validateZIP(field,type) {

	 var valid = "0123456789-";

	 var hyphencount = 0;



	 if (field.length!=5) {

	 alert("Please enter your 5 digit zip code.");

	 return false

	 }

	 for (var i=0; i < field.length; i++) {

		temp = "" + field.substring(i, i+1);

		if (temp == "-") hyphencount++;

		if (valid.indexOf(temp) == "-1") {

		alert("Invalid characters in "+type+". Please try again.");

		return false;

		}

	 }

 	 return true

  }

 // Variables for the current date, year and month

 var right_now=new Date();

 var the_year=right_now.getYear();

 var dtCh= "/";

 var minYear=the_year;

 var maxYear=the_year+3;



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 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

}