Distance Speed Time

Description
Calculate the time, distance, or speed given any two of the pieces of information....View A Script Demo
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">

<HTML>

<HEAD>

<META NAME="Generator" CONTENT="TextPad 4.4">

<LINK href="general.css" rel="stylesheet" type="text/css">

<SCRIPT LANGUAGE="JavaScript">

<!-- Original:  Gary Nicholson (nicholsongary@hotmail.com) -->

<!-- Web Site:  http://homepages.ihug.co.nz/~gazzanic/ -->

<!-- Begin

function calculatetime(form) {

//  get conversion factors from selected options

var i = form.distunits.selectedIndex;

var distunitsvalue = form.distunits.options[i].value; 

var j = form.speedunits.selectedIndex;

var speedunitsvalue = form.speedunits.options[j].value;

//  calculate time in seconds    

form.secondvalue.value = (form.distvalue.value * distunitsvalue) / (form.speedvalue.value * speedunitsvalue);

//  convert to hours, minutes, seconds    

form.hourvalue.value = parseInt(form.secondvalue.value / 3600);

form.secondvalue.value = form.secondvalue.value - (form.hourvalue.value * 3600);

form.minutevalue.value = parseInt(form.secondvalue.value / 60);

form.secondvalue.value = parseInt(form.secondvalue.value - (form.minutevalue.value * 60));

return true;

}

function calculatedistance(form) {

//  get conversion factors from selected options

var i = form.distunits.selectedIndex;

var distunitsvalue = form.distunits.options[i].value; 

var j = form.speedunits.selectedIndex;

var speedunitsvalue = form.speedunits.options[j].value;

//  convert time to seconds

var temp = ((parseFloat(form.hourvalue.value) * 3600) + (parseFloat(form.minutevalue.value) * 60) + parseFloat(form.secondvalue.value));

//  calculated distance

form.distvalue.value = ((form.speedvalue.value * speedunitsvalue) * temp) / distunitsvalue; 

return true;

}

function calculatespeed(form) {

//  get conversion factors from selected options

var i = form.distunits.selectedIndex;

var distunitsvalue = form.distunits.options[i].value; 

var j = form.speedunits.selectedIndex;

var speedunitsvalue = form.speedunits.options[j].value;

//  convert time to seconds

var temp = ((parseFloat(form.hourvalue.value) * 3600) + (parseFloat(form.minutevalue.value) * 60) + parseFloat(form.secondvalue.value));

//  calculate speed

form.speedvalue.value = ((form.distvalue.value * distunitsvalue)  / (temp * speedunitsvalue)); 

return true;

}

function clearcell(cell) {

cell.value = "";

return true;

}

//  End -->

</script>

</HEAD>

<BODY Background=../graphics/grayback.jpg>

<center><BR><BR><BR>

<h4>Time from Distance and Speed</h4>

<form>

<table>

<tr>

<td>Enter distance value and unit:</td> 

<td><input type=text name=distvalue size=15 value="1" onfocus="clearcell(distvalue)"></td>

<td><select name=distunits>

<option value=1>Metres

<option value=0.001>Millimetres

<option value=0.01>Centimetres

<option value=1000>Kilometres

<option value=0.0254>Inches

<option value=0.3048>Feet

<option value=0.9144>Yards

<option value=1.8288>Fathoms

<option value=1609.344>Statute Miles

<option value=1852>Nautical Miles

<option value=9460000000000000>Light Year

</select>

</td>

</tr>

<tr>

<td>Enter speed value and units:</td> 

<td><input type=text name=speedvalue size=15 value="1" onfocus="clearcell(speedvalue)"></td>

<td><select name=speedunits>

<option value=1>Metres per Second

<option value=0.277777777777777777777777777777777777>Kilometre per Hour

<option value=0.3048>Feet per Second

<option value=0.00508>Feet per Minute

<option value=0.01524>Yard per Minute

<option value=0.44704>Statute Mile per Hour

<option value=0.514444444444>Knot

</select></td>

</tr>

</table>

<table>

<tr>

<td>Time is:</td>

<td><input type=text name=hourvalue size=5 value="" readonly></td>

<td>Hours</td>

<td><input type=text name=minutevalue size=5 value="" readonly></td>

<td>Minutes</td>

<td><input type=text name=secondvalue size=5 value="" readonly></td>

<td>Seconds</td>

</tr>

</table>

<input type=button value="Calculate" onClick='calculatetime(this.form)'>

</form>

<hr>

<h4>Distance from Speed and Time</h4>

<form>

<table>

<tr>

<td>Enter speed value and units:</td> 

<td><input type=text name=speedvalue size=15 value="1" onfocus="clearcell(speedvalue)"></td>

<td><select name=speedunits>

<option value=1>Metres per Second

<option value=0.277777777777777777777777777777777777>Kilometre per Hour

<option value=0.3048>Feet per Second

<option value=0.00508>Feet per Minute

<option value=0.01524>Yard per Minute

<option value=0.44704>Statute Mile per Hour

<option value=0.514444444444>Knot

</select></td>

</tr>

</table>

<table>

<tr>

<td>Enter time:</td>

<td><input type=text name=hourvalue size=5 value="0" onfocus="clearcell(hourvalue)"></td>

<td>Hours</td>

<td><input type=text name=minutevalue size=5 value="0" onfocus="clearcell(minutevalue)"></td>

<td>Minutes</td>

<td><input type=text name=secondvalue size=5 value="0" onfocus="clearcell(secondvalue)"></td>

<td>Seconds</td>

</tr>

</table>

<table>

<tr>

<td>Distance is (select unit before calculating):</td> 

<td><input type=text name=distvalue size=15 value="" readonly></td>

<td><select name=distunits>

<option value=1>Metres

<option value=0.001>Millimetres

<option value=0.01>Centimetres

<option value=1000>Kilometres

<option value=0.0254>Inches

<option value=0.3048>Feet

<option value=0.9144>Yards

<option value=1.8288>Fathoms

<option value=1609.344>Statute Miles

<option value=1852>Nautical Miles

<option value=9460000000000000>Light Year

</select>

</td>

</tr>

</table>

<input type=button value="Calculate" onClick="calculatedistance(this.form)">

</form>

<hr>

<h4>Speed from Distance and Time</h4>

<form>

<table>

<tr>

<td>Enter distance value and unit:</td> 

<td><input type=text name=distvalue size=15 value="1" onfocus="clearcell(distvalue)"></td>

<td><select name=distunits>

<option value=1>Metres

<option value=0.001>Millimetres

<option value=0.01>Centimetres

<option value=1000>Kilometres

<option value=0.0254>Inches

<option value=0.3048>Feet

<option value=0.9144>Yards

<option value=1.8288>Fathoms

<option value=1609.344>Statute Miles

<option value=1852>Nautical Miles

<option value=9460000000000000>Light Year

</select>

</td>

</tr>

</table>

<table>

<tr>

<td>Enter time:</td>

<td><input type=text name=hourvalue size=5 value="0" onfocus="clearcell(hourvalue)"></td>

<td>Hours</td>

<td><input type=text name=minutevalue size=5 value="0" onfocus="clearcell(minutevalue)"></td>

<td>Minutes</td>

<td><input type=text name=secondvalue size=5 value="0" onfocus="clearcell(secondvalue)"></td>

<td>Seconds</td>

</tr>

</table>

<table>

<tr>

<td>Speed is (select units before calculating):</td> 

<td><input type=text name=speedvalue size=15 value="1" readonly></td>

<td><select name=speedunits>

<option value=1>Metres per Second

<option value=0.277777777777777777777777777777777777>Kilometre per Hour

<option value=0.3048>Feet per Second

<option value=0.00508>Feet per Minute

<option value=0.01524>Yard per Minute

<option value=0.44704>Statute Mile per Hour

<option value=0.514444444444>Knot

</select></td>

</tr>

</table>

<input type=button value="Calculate" onClick="calculatespeed(this.form)">

</form>

</center>

</BODY>

</HTML>
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