JavaScript: Calendars Script - Find Friday 13th's

Main Calendars Script Find Friday 13th's

<HEAD><title>JavaScript, java script, javascripts, script, javascript free code!</title>



	<style>
		#InternalDiv {position:relative;width:250px;height:1px;color:blue;background-color:#FDF5E6;border-style:double;border-color:blue;padding-top:5px;padding-left:5px;padding-right:5px;padding-bottom:5px;margin:3px;visibility:visible;z-index:10;top:50;left:0;}
	</style>
	<script>

function startitup() {

var BasicHTML = "<center>Results will be posted here!!</center>"

document.all["InternalDiv"].innerHTML = BasicHTML;

}

</script>

</HEAD>

var new_Date=new Date()

//var DOW=new_Date.getDay()+1

var DOM=new_Date.getDate()

//var Month=new_Date.getMonth()+1

var Year=new_Date.getFullYear()

var LongMonth = new Array("January","February","March","April","May","June","July","August","September","October","November","December")

var LongDay = new Array("Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday")

var setTimer = 5000;

function find13th() {

var Start = startyear.value

var End = endyear.value

var TooMuch = End-Start

//alert(TooMuch)

if (confirm("Caution, this may result in an extremely large result, and may take a long time to display those results."))

if (End < Start)						//if end<start alert user, else

alert("Sorry, the ending year must be greater than or equal to the beginning year..")

else {									//allow dates and continue

var BasicHTML = "<center><u>Results!!</u>"

for (YearTest=Start;YearTest<=End;YearTest++) {

if (MonthSelect.value==20) {

for (MonthTest=0;MonthTest<=11;MonthTest++) {

var TestDate = new Date(YearTest,MonthTest,13)

if (TestDate.getDay()==5)

BasicHTML = BasicHTML+"<br>"+LongMonth[MonthTest]+" "+TestDate.getDate()+", "+YearTest

}

else {

var TestDate = new Date(YearTest,MonthSelect.value,13)

if (TestDate.getDay()==5)

BasicHTML = BasicHTML+"<br>"+LongMonth[MonthSelect.value]+" "+TestDate.getDate()+", "+YearTest

}

document.all["InternalDiv"].innerHTML = BasicHTML;

}

else {

alert("Please make the years closer together..")

}

function clearResults() {

var BasicHTML = "<center>Results will be posted here!!</center>"

document.all["InternalDiv"].innerHTML = BasicHTML;

}

</script>

<h1 style="font-size='24'">Find Friday the 13th's!!</h1>

Enter beginning year:

Enter ending year:

You may also select by a particular month:

<option VALUE ="20" SELECTED>None Preferred</option>

<option value="0">January</option>

<option value="1">February</option>

<option value="2">March</option>

<option value="3">April</option>

<option value="7">August</option>

<option value="8">September</option>

<option value="9">October</option>

<option value="10">November</option>

<option value="11">December</option>

</select>

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</center><p>

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