Calculators Effects >>> Ad Calculator.


		<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 
		adCalc(form)
		{

		var 
		ok =
		0;

		var 
		cost =
		form.cost.value;

		var 
		cpm =
		form.cpm.value;

		var 
		exposures =
		form.exposures.value;

		

		var
		complete
		=
		"It looks like you entered all 
		the information already!  With this calculator, you just enter two of 
		the fields and it solves for the last one.";

		

		var 
		incomplete =
		"Oops!  It doesn't appear you 
		entered enough information.  Please enter at least two entries in order 
		to solve for the other two.";

		

		if
		(cost
		!=
		""
		&& 
		cpm !=
		"")      
		{
		form.exposures.value
		=
		((cost
		/ 
		cpm)
		*
		1000); 
		ok++;
		}
		// solve for exposures

		if
		(cost
		!=
		""
		&& 
		exposures !=
		"")
		{
		form.cpm.value
		=
		((1000
		/ 
		exposures)
		* 
		cost); 
		ok++;
		}
		// solve for cpm

		if
		(cpm
		!=
		""
		&& 
		exposures !=
		"") 
		{
		form.cost.value
		= 
		cpm /
		(1000
		/ 
		exposures);   
		ok++;
		}
		// solve for cost

		

		if
		(!ok)
		alert(incomplete); 
		// they did not enter at least 2 
		fields

		if
		(cost
		!=
		""
		&& 
		cpm !=
		""
		&& 
		exposures !=
		"")
		alert(complete);
		// they filled in all the 
		fields!

		}

		//  End -->

		</script>

		<center>

		<form
		method=post>

		<table
		border="1"
		cellpadding=5>

		<tr>

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

		<td 
		align=center><input
		type=text
		name=cost
		size=8
		value=""
		onFocus="select()"></td>

		</tr>

		<tr>

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

		<td 
		align=center><input
		type=text
		name=cpm
		size=8
		value=""
		onFocus="select()"></td>

		</tr>

		<tr>

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

		<td 
		align=center><input
		type=text
		name=exposures
		size=8
		value=""
		onFocus="select()"></td>

		</tr>

		<tr>

		<td 
		colspan=2
		align=center><input
		type=button
		value="Solve"
		onClick="adCalc(this.form)">
		<input
		type=reset
		value=reset></td>

		</tr>

		</table> 

		</form>

		</center>