function contact_valid(code)
{
	//alert("cssa");
var i=document.contactus		
	 	 
	if(i.name.value=="")
		  {
			 alert("Please enter name.");
			 i.name.focus();
			 return false;
		  }
		  
		if(i.name.value!="")
			{
				   var a=i.name.value.split(" ");
				   if(a[0]=="")
					   {
						 alert("First character of name should not be space.");
						 i.name.focus();
						 return false;
					   }
			}
        
		
		if(i.email.value=="")
		  {
			 alert("Please enter email-id.");
			 i.email.focus();
			 return false;
		  }
		
		
		if(i.email.value!="")
			{
				   var a=i.email.value.split(" ");
				   if(a[0]=="")
					   {
						 alert("First character of email should not be space.");
						 i.email.focus();
						 return false;
					   }
			}
		  
          if(isValidEmail(i.email.value)==false)
		     {
			
			//alert("cssa");
			alert("Incorrect email format.");
				i.email.focus();
				return false;	
			}
			 if(i.subject.value=="")
		       {
					 alert("Please enter subject.");
					 i.subject.focus();
					 return false;
		       }
		  
				 if(i.subject.value!="")
					{
						   var a=i.subject.value.split(" ");
						   if(a[0]=="")
							   {
								 alert("First character of subject should not be space.");
								  i.subject.focus();
								 return false;
							   }
					}	
			if(i.subject.value!="")
					{
						   var a=i.subject.value.split(" ");
						   if(a[0]=="")
							   {
								 alert("First character of subject should not be space.");
								 i.subject.focus();
								 return false;
							   }
					}			
			
					 if(i.message.value=="")
					   {
							 alert("Please enter message.");
							 i.message.focus();
							 return false;
					   }
 return true;			
			
}
//end of function contact_valid



/***************************************************************************************************************
*  
*      isWhitespace is using the if  Field Empty 
*
****************************************************************************************************************/
function isWhitespace(str)
{    var i;
	 var flag
 	 if (isEmpty(str)) return true;
     
	    for (i = 0; i < str.length; i++)
 	   {   
 	       // Check that current character isn't whitespace.
 	       var c = str.charAt(i);

		   if (whitespace.indexOf(c) == -1)
		   		return false
 	   }	
 	   // All characters are whitespace.
		    return true;
			
		//	alert("Please Enter Username");
}

/*************************************************************************************************************
*
* isValidEmail it checks the Email-Id is Valid or Not 
*
**************************************************************************************************************/
function isValidEmail(emailStr)
{
			/* The following pattern is used to check if the entered e-mail address
			   fits the user@domain format.  It also is used to separate the username
			   from the domain. */
			var emailPat=/^(.+)@(.+)$/
			/* The following string represents the pattern for matching all special
			   characters.  We don't want to allow special characters in the address. 
			   These characters include ( ) < > @ , ; : \ " . [ ]    */
			//var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]"
			var specialChars="\\(\\)<>@,`';:~!#$%^&*+=|{}?\\\\\\\"\\.\\[\\]"
			
			/* The following string represents the range of characters allowed in a 
			   username or domainname.  It really states which chars aren't allowed. */
			var validChars="\[^\\s" + specialChars + "\]"
			/* The following pattern applies if the "user" is a quoted string (in
			   which case, there are no rules about which characters are allowed
			   and which aren't; anything goes).  E.g. "sg cricket"@disney.com
			   is a legal e-mail address. */
			var quotedUser="(\"[^\"]*\")"
			/* The following pattern applies for domains that are IP addresses,
			   rather than symbolic names.  E.g. sg@[123.124.233.4] is a legal
			   e-mail address. NOTE: The square brackets are required. */
			var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/
			/* The following string represents an atom (basically a series of
			   non-special characters.) */
			var atom=validChars + '+'
			/* The following string represents one word in the typical username.
			   For example, in sg.sg@somewhere.com, sg and sg are words.
			   Basically, a word is either an atom or quoted string. */
			var word="(" + atom + "|" + quotedUser + ")"
			// The following pattern describes the structure of the user
			var userPat=new RegExp("^" + word + "(\\." + word + ")*$")
			/* The following pattern describes the structure of a normal symbolic
			   domain, as opposed to ipDomainPat, shown above. */
			var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$")


			/* Finally, let's start trying to figure out if the supplied address is
			   valid. */

			/* Begin with the coarse pattern to simply break up user@domain into
			   different pieces that are easy to analyze. */
			var matchArray=emailStr.match(emailPat)
			if (matchArray==null) {
			  /* Too many/few @'s or something; basically, this address doesn't
			     even fit the general mould of a valid e-mail address. */
				//alert("Email address seems incorrect (check @ and .'s)")
				return false
			}
			var user=matchArray[1]
			var domain=matchArray[2]

			// See if "user" is valid 
			if (user.match(userPat)==null) {
			    // user is not valid
			    //alert("The username doesn't seem to be valid.")
			    return false
			}

			/* if the e-mail address is at an IP address (as opposed to a symbolic
			   host name) make sure the IP address is valid. */
			var IPArray=domain.match(ipDomainPat)
			if (IPArray!=null) {
			    // this is an IP address
				  for (var i=1;i<=4;i++) {
				    if (IPArray[i]>255) {
				        //alert("Destination IP address is invalid!")
					return false
				    }
			    }
			    return true
			}

			// Domain is symbolic name
			var domainArray=domain.match(domainPat)
			if (domainArray==null) {
			//alert("The domain name doesn't seem to be valid.")
			    return false
			}

			/* domain name seems valid, but now make sure that it ends in a
			   three-letter word (like com, edu, gov) or a two-letter word,
			   representing country (uk, nl, no), and that there's a hostname preceding 
			   the domain or country. */

			/* Now we need to break up the domain to get a count of how many atoms
			   it consists of. */
			var atomPat=new RegExp(atom,"g")
			var domArr=domain.match(atomPat)
			var len=domArr.length
			if (domArr[domArr.length-1].length<2 || 
			    domArr[domArr.length-1].length>3) {
			   // the address must end in a two letter or three letter word.
			   //alert("The address must end in a three-letter domain, or two letter country.")
			   return false
			}

			// Make sure there's a host name preceding the domain.
			if (len<2) {
			   var errStr="This address is missing a hostname"
			   //alert(errStr)
			   return false
			}

			// If we've gotten this far, everything's valid!
			return true;
}