Created
February 25, 2010 16:40
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| <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" | |
| "http://www.w3.org/TR/html4/loose.dtd"> | |
| <html> | |
| <head> | |
| <title>JavaScript Alert Boxes</title> | |
| <script language="JavaScript"> | |
| function rwhcal(area,precip,eff,capt) | |
| { | |
| var area = parseFloat(document.getElementById('txtArea').value); | |
| var precip = parseFloat(document.getElementById('txtPrecip').value); | |
| var eff = parseFloat(document.getElementById('txtCapt').value); | |
| var capt = parseFloat(document.getElementById('txtEff').value); | |
| var total = (area*precip*(eff/100)*(capt/100)*0.623); | |
| var total_rnd = Math.round(total); | |
| alert("You can capture approximately " + total_rnd + " gallons of water off your roof annually!"); | |
| } | |
| </script> | |
| </head> | |
| <body> | |
| Enter Area: <input type='text' id='txtArea'/><br/> | |
| Enter Precip: <input type='text' id='txtPrecip'/><br/> | |
| Enter Efficiency: <input type='text' id='txtEff'/><br/> | |
| Enter Percent Capture Area: <input type='text' id='txtCapt'/><br/> | |
| <input type='button' value='Calculate Rainwater Capture Volume' onclick="rwhcal()"/> | |
| </body> | |
| </html> |
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