function check()
{		
	
	
	var formcheck=document.myform.name.value;
	var formcheck1=document.myform.email.value;
	var formcheck2=document.myform.arrival.value;
	var formcheck3=document.myform.departure.value;


	var flag =0;
	

	if(formcheck=="" || formcheck1=="" ||formcheck2=="" || formcheck3=="")
	{
		alert('Please fill up the fields marked with a *');
		flag=1;
		
		if(formcheck=="")
		{
		document.myform.name.focus();return(false);
		}
		if(formcheck1=="")
		{
		document.myform.email.focus();return(false);
		}
		if(formcheck2=="")
		{
		document.myform.arrival.focus();return(false);
		}
		if(formcheck3=="")
		{
		document.myform.departure.focus();return(false);
		}
		
	}
		
	
if(flag==0)
{
	if(formcheck1.indexOf(" ") >= 0 )
		{
			alert("Please enter the E-Mail address without any white space character.");
			document.myform.email.focus();
			return (false);
		}

		
		AtRateCheckfrom = formcheck1.indexOf("@");
		AtDotCheckfrom  = formcheck1.indexOf(".");

		
		AtRateCheckLastfrom = formcheck1.lastIndexOf("@");
		AtDotCheckLastfrom = formcheck1.lastIndexOf(".");
 

		
		if ( (AtRateCheckfrom == -1) || (AtDotCheckfrom == -1) && flag==0)
		{
			alert("Please enter your valid email-id"); 
			document.myform.email.focus();
			
			
			return (false);
		}
		
			
		if( (AtRateCheckLastfrom != AtRateCheckfrom)  && flag==0)
		{
			alert("Please enter your valid email-id"); 
			document.myform.email.focus();
			return (false);
		}

		BeforeAtRatefrom = formcheck1.substring(0,formcheck1.indexOf("@"));
		AfterAtRatefrom = formcheck1.substring(formcheck1.indexOf("@")+1,formcheck1.length);

				
		if (AfterAtRatefrom.indexOf(".") == -1 && flag==0)
		{
			alert("Please enter your valid email-id"); 
			document.myform.email.focus();
			return (false);
		}

		
		middlefrom = AfterAtRatefrom.substring(0, AfterAtRatefrom.indexOf("."))
		lastfrom = AfterAtRatefrom.substring(AfterAtRatefrom.indexOf(".") + 1,AfterAtRatefrom.length)

		
		if (BeforeAtRatefrom.length == 0 || middlefrom.length == 0 || lastfrom.length == 0 && flag==0)
		{
			alert("Please enter your valid E-Mail"); 
			document.myform.email.focus();
			return (false);
		}

else
{

	 	document.myform.submit();
		return(true);
}
		
}	

}