function chkform()
{
	var frmlen = document.form1.elements.length ;
	var count = 0;	
	var errs = "";//		
	for(var k =0; k < frmlen ; k++)
	{
		var errname = chkvalue(document.form1.elements[k].value);
		
		
			if(errname)
			{
			}
			else
			{
			errs += "\t"+document.form1.elements[k].name +"\n" ;					
			}
			
	
	}
	if(errs.length > 0)
	{
		alert(" \n Following Fields are not entered.  Please  Fill up :\n\t==========\n"+errs+"\t==========");
		return false;
	}
	else	
		return true;
	
}

function chkvalue(invalue)
	{
		//var invalue = inobj.value ;
		
		if(invalue =="" || (invalue.charAt(0) == ' ') )
			return false;
		else
		  return true ;
	
	}
	
function  checkmail()
	{
	
		var emailid=document.form1.email.value;
		if( emailid.length>0 ) 
		{
			if (emailid.length != 0) 
			{
			   var at = emailid.indexOf ('@', 0);
			   var dot = emailid.indexOf ('.', 0);
				if ((at == -1) ||(dot == -1) || (dot < at)||(emailid.indexOf ('@', at+1) != -1))
				{
				     alert("Please enter valid Reply emailid Address");
					     return (false);
				} 
				else if ((emailid.substring(0,at).length== 0 ) ||
				     (emailid.substring(at+1,dot).length == 0)||
					     (emailid.substring(dot+1,dot+4).length==0))
				  {
				     alert("Please enter valid  Email Address");
				     return (false);
				  } 
				  else
				   return true;
					
			}	
	
		}
		else
		{
		  alert("Enter email id in the field");
		  return false;
		}
	
	}
function isValidDate(dateStr) 
{
	
	// Checks for the following valid date formats:
	// MM/DD/YY   MM/DD/YYYY   MM-DD-YY   MM-DD-YYYY
	
	var datePat = /^(\d{1,2})(\/|-)(\d{1,2})\2(\d{4})$/; // requires 4 digit year
	
	var matchArray = dateStr.match(datePat); // is the format ok?
	if (matchArray == null) {
	alert(dateStr + " Date is not in a valid format.")
	return false;
	}
	month = matchArray[1]; // parse date into variables
	day = matchArray[3];
	year = matchArray[4];
	if (month < 1 || month > 12) { // check month range
	alert("Month must be between 1 and 12.");
	return false;
	}
	if (day < 1 || day > 31) {
	alert("Day must be between 1 and 31.");
	return false;
	}
	if ((month==4 || month==6 || month==9 || month==11) && day==31) {
	alert("Month "+month+" doesn't have 31 days!")
	return false;
	}
	if (month == 2) { // check for february 29th
	var isleap = (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0));
	if (day>29 || (day==29 && !isleap)) {
	alert("February " + year + " doesn't have " + day + " days!");
	return false;
	   }
	}
	return true;
}