Forms >>> Validation Time.


		<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 
		IsValidTime(timeStr)
		{

		// Checks if time is in HH:MM:SS 
		AM/PM format.

		// The seconds and AM/PM are optional.

		

		var 
		timePat =
		/^(\d{1,2}):(\d{2})(:(\d{2}))?(\s?(AM|am|PM|pm))?$/;

		

		var 
		matchArray = 
		timeStr.match(timePat);

		if
		(matchArray
		==
		null)
		{

		alert("Time 
		is not in a valid format.");

		return
		false;

		}

		hour 
		= 
		matchArray[1];

		minute 
		= 
		matchArray[2];

		second 
		= 
		matchArray[4];

		ampm 
		= 
		matchArray[6];

		

		if
		(second=="")
		{ 
		second =
		null;
		}

		if
		(ampm=="")
		{ 
		ampm =
		null
		}

		

		if
		(hour
		<
		0 
		|| 
		hour >
		23)
		{

		alert("Hour 
		must be between 1 and 12. (or 0 and 23 for military time)");

		return
		false;

		}

		if
		(hour
		<=
		12
		&& 
		ampm ==
		null)
		{

		if
		(confirm("Please 
		indicate which time format you are using.  OK = Standard Time, CANCEL = 
		Military Time"))
		{

		alert("You 
		must specify AM or PM.");

		return
		false;

		   
		}

		}

		if 
		(hour
		>
		12
		&& 
		ampm !=
		null)
		{

		alert("You 
		can't specify AM or PM for military time.");

		return
		false;

		}

		if
		(minute<0
		|| 
		minute >
		59)
		{

		alert
		("Minute 
		must be between 0 and 59.");

		return
		false;

		}

		if
		(second
		!=
		null
		&&
		(second
		<
		0
		|| 
		second >
		59))
		{

		alert
		("Second 
		must be between 0 and 59.");

		return
		false;

		}

		return
		false;

		}

		//  End -->

		</script>

		<form
		name=timeform
		onSubmit="return 
		IsValidTime(document.timeform.time.value);">

		Time (HH:MM:SS AM/PM format)  
		<input 
		type=text
		name=time><br>

		<input
		type="submit"
		value="Submit">

		</form>