Calculators Effects >>> Circle Solver.


		<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

		function 
		circle(form,changed)
		{

		with
		(Math)
		{

		var 
		area =
		form.area.value;

		var 
		diameter =
		form.diameter.value;

		var 
		circumference =
		form.circumference.value;

		if
		(changed
		==
		"area")
		{

		var 
		radius =
		sqrt(area
		/
		PI);

		diameter 
		=
		2
		* 
		radius;

		circumference 
		=
		PI
		* 
		diameter;

		}

		if
		(changed
		==
		"diameter")
		{

		area 
		=
		PI
		*
		(diameter
		/
		2)
		*
		(diameter
		/
		2);

		circumference 
		=
		PI
		* 
		diameter;

		}

		if
		(changed
		==
		"circumference")
		{

		diameter 
		= 
		circumference /
		PI;

		area 
		=
		PI
		*
		(diameter
		/
		2)
		*
		(diameter
		/
		2);

		       
		}

		form.area.value
		= 
		area;

		form.diameter.value
		= 
		diameter;

		form.circumference.value
		= 
		circumference;

		  
		}

		}

		var 
		toDegrees =
		360
		/
		(Math.PI
		*
		2);

		var 
		toRadians =
		(Math.PI
		*
		2)
		/
		360;

		//  End -->

		</script>

		<form
		method=post>

		<table
		border="5">

		<tr>

		<td 
		align=center>Area:</td>

		<td 
		align=center><input
		type=text
		name=area
		size=6
		value=0 
		onFocus="select()"></td>

		<td 
		align=center><input
		type=button
		value="Solve 
		Others" 
		onClick="circle(this.form,'area')"></td>

		</tr>

		<tr>

		<td 
		align=center>Diameter:</td>

		<td 
		align=center><input
		type=text
		name=diameter
		size=6
		value=0
		onFocus="select()"></td>

		<td 
		align=center><input
		type=button
		value="Solve 
		Others" 
		onClick="circle(this.form,'diameter')"></td>

		</tr>

		<tr>

		<td 
		align=center>Circumference:</td>

		<td 
		align=center><input
		type=text
		name=circumference
		size=6
		value=0
		onFocus="select()"></td>

		<td 
		align=center><input
		type=button
		value="Solve 
		Others" 
		onClick="circle(this.form,'circumference')"></td>

		</tr>

		</table> 

		</form>