/*
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** GenericClientSideFunctions.js
** 
** Generic client side javascript functions
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*/

function ResetForm(form){
	if(confirm("Are you sure you want to reset the form?")){
		form.reset();
		return true;
	}
	return false;
}

function CancelForm(cancelurl){
	if(confirm("Are you sure you want to cancel?")){
		window.location.href = cancelurl;
		return true;
	}
	return false;
}

// ******************************************************************
// This function accepts a string variable and verifies if it is a
// proper date or not. It validates format matching either
// mm-dd-yyyy or mm/dd/yyyy. Then it checks to make sure the month
// has the proper number of days, based on which month it is.
// The function returns true if a valid date, false if not.
// ******************************************************************
function isDate(dateStr){
    var datePat = /^(\d{1,2})(\/|-)(\d{1,2})(\/|-)(\d{4})$/;
    var matchArray = dateStr.match(datePat); // is the format ok?
 
    if (matchArray == null) {
        alert("Please enter date as either mm/dd/yyyy or mm-dd-yyyy.");
        return false;
    }
    month = matchArray[1]; // parse date into variables
    day = matchArray[3];
    year = matchArray[5];

    if (month < 1 || month > 12) { // check month range
        alert("Month must be between 1 and 12.");
        return false;
    }
    if (day < 1 || day > 31) {
        alert("Day must be between 1 and 31.");
        return false;
    }
    if ((month==4 || month==6 || month==9 || month==11) && day==31) {
        alert("Month "+month+" doesn't have 31 days!");
        return false;
    }
    if (month == 2) { // check for february 29th
        var isleap = (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0));
        if (day > 29 || (day==29 && !isleap)) {
            alert("February " + year + " doesn't have " + day + " days!");
            return false;
        }
    }
    return true; // date is valid
}

//used to popup windows and center them in the browser window
function OpenPopupWindow(filename,windowname,properties) {
	var w=480;
	var h=380;

	if (document.all) {
		// the following is only available after onLoad
		w = document.body.clientWidth;
		h = document.body.clientHeight;
	}
	else if (document.layers) {
		w = window.innerWidth;
		h = window.innerHeight;
	}

	var popW = 450;
	var popH = 383;
	var leftPos = (w-popW) / 2;
	var topPos = (h-popH) / 2;
	properties = properties + ',top=' + topPos + ',left=' + leftPos;

	PopupWindow = window.open(filename,windowname,properties);
}

//coded due to mapping needing frames - all pages but mapping will call this function on event BODY ONLOAD 
function BreakOutOfFrames(){
	if (top.location.href != self.location.href) {
		//break out of frameset by reloading the page
		top.location.href = self.location.href;
	}
}

/*
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** End of GenericClientSiceFunctions.js
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*/