//function to validate by length
function lengthValid(field, len, text) {
	
	// text = Trim(text);

	if (field.value.length < len)
  	{
 	  	alert("Please enter a valid " + text + ".");
		field.focus();
		return false;
	}else{
		return true;
	}
}

//function to validate numerical fields
function numberValid(field, text) {
    //text = Trim(text);
	if (isNaN(field.value))
  	{
 	  	alert("Please enter a valid " + text + ".");
		field.focus();
		return false;
	}else{
		return true;
	}
}


//function to validate Zip Code fields
function zipValid(field,len, text) {
    //text = Trim(text);
	
	if (isNaN(field.value) || field.value.length < len)
  	{
 	  	alert("Please enter a valid " + text + ".");
		field.focus();
		return false;
	}else{
		return true;
	}
}

//function to validate email
function emailValid(mailfield, len, text) {
   // text = Trim(text);
	if(mailfield.value.length < len || mailfield.value.indexOf("@") < 1 || mailfield.value.indexOf(".") < 2)
	{
	    alert("Please enter a valid " + text + ".");
		mailfield.focus();
		return false;
	}else{
		return true;
	}
}

//function to validate select drop-downs
function selectValid(field, text) {
    //text = Trim(text);
	if (field[0].selected)
  	{
 	  	alert("Please select a " + text + ".");
		field.focus();
		return false;
	}else{
		return true;
	}
}




function checkdate(MM, DD, YY) {
	var MM = fixDate(MM.value);
	var DD = DD.value;
	var YY = YY.value;

    var InputDate = new Date();
    var CurrentDate = new Date();

    InputDate.setDate(DD);
    InputDate.setMonth(MM);
    InputDate.setFullYear(YY);

    if(InputDate < CurrentDate){
        alert('date entered has already passed');
        return false;        
    }
    else{
    var SixMonthsAheadDateTime = new Date();
    SixMonthsAheadDateTime.setDate(SixMonthsAheadDateTime.getDate()+180);

    if(SixMonthsAheadDateTime < InputDate){
        alert('we only accept dates that are within 6 months');
        return false;
    }
    }
    return true;
}


function fixDate(MM){
if(MM == "January"){MM = 0;}
if(MM == "February"){MM = 1;}
if(MM == "March"){MM = 2;}
if(MM == "April"){MM = 3;}
if(MM == "May"){MM = 4;}
if(MM == "June"){MM = 5;}
if(MM == "July"){MM = 6;}
if(MM == "August"){MM = 7;}
if(MM == "September"){MM = 8;}
if(MM == "October"){MM = 9;}
if(MM == "November"){MM = 10;}
if(MM == "December"){MM = 11;}

return MM;
}