Calculators Effects >>> Savings Estimator.


		<script 
		language="javascript"
		type="text/javascript">

		/* Visit http://www.yaldex.com/ 
		for full source code

		and get more free JavaScript, CSS and DHTML scripts! */

		<!-- Begin

		var 
		i =
		0;
		// interest

		var 
		m =
		0;
		// months

		var 
		f =
		0;
		// factor

		var 
		den =
		0;

		var 
		s =
		"0";
		// string

		var 
		d =
		0;
		// decimal place

		function 
		CalcA()
		{

		if(document.calform.interest.value==""
		||
		document.calform.months.value==""
		||
		document.calform.payment.value=="")
		{

		alert("Please 
		fill in all of the required fields.");

		}

		else
		{

		if(document.calform.period.options[1].selected
		==
		true)
		{

		m 
		=
		document.calform.months.value
		*
		12;

		}

		else
		{

		m 
		=
		document.calform.months.value;

		}

		i 
		=
		Math.pow(((document.calform.interest.value/100)+1),.0833333)-1;

		den 
		= 
		i /
		(i+1);

		f 
		=
		Math.pow((i+1),m)-1;

		f 
		/= 
		den;

		f 
		*=
		document.calform.payment.value;

		d 
		=
		String(f).indexOf(".");

		s 
		=
		String(f).substring(0,(d+3));

		document.calform.total.value
		=
		"$"
		+ 
		s;

		   
		}

		}

		//  End -->

		</script>

		<form
		method=post
		name="calform">

		<table
		width=400>

		<tr>

		<td 
		align=right
		width=200>Total 
		invested each month:</td>

		<td><input
		type=text
		name=payment
		size=13
		maxlength=13></td>

		</tr>

		<tr>

		<td 
		align=right
		width=200>Number 
		of months/years to aquire sum:</td>

		<td><input
		type=text
		name=months
		size=3
		maxlength=3>

		<select 
		name=period
		size=1>

		<option 
		value="m">Months

		<option
		value="y">Years

		</select>

		</td>

		</tr>

		<tr>

		<td 
		align=right
		width=200>Interest 
		rate on savings:</td>

		<td><input
		type=text
		name=interest
		size=5
		maxlength=5><b> 
		%</b></td>

		</tr>

		<tr>

		<td 
		width=200
		colspan=2
		align=center>
		

		<input
		type=button
		name=button1
		value="How 
		much will I have?" 
		onClick="javascript:CalcA()"></td>

		</tr>

		<tr>

		<td 
		colspan=2
		align=center
		width=200
		nowrap>Total 
		:

		<input
		type=text
		name=total
		value="0.00"
		size=15
		maxlength=15></td>

		</tr>

		</table>

		</form>