// JavaScript Document

function checkFields(){

	var doc = document.frmRegister;
	var missinginfo = "";
	
	// For name Start
	if (isEmpty(doc.yourName.value)) {
		document.getElementById("showerr").style.display="block";
		document.getElementById('err').innerHTML='Please enter your Name';
		doc.yourName.focus();
		return false;
	}
	if (!isEmpty(doc.yourName.value)) {
		str=(document.getElementById('yourName')).value;
		flag=validate(str);
		 if(flag==0)
		 {   
		      document.getElementById("showerr").style.display="block";
			  document.getElementById('err').innerHTML='Please Valid Name.';
			  doc.yourName.focus();
		      return false;
		 }
		 
	}
	
	if (!isEmpty(doc.yourName.value)) {
		
   var str1=doc.yourName.value;
   var iChars = "!@#$%^&*()+=-[]\\\';,./{}|\":<>?";
   var length= str1.length;
   for (var i = 0; i <length ; i++) {
  
  	if (iChars.indexOf(doc.yourName.value.charAt(i)) != -1) {
	document.getElementById("showerr").style.display="block";
	 document.getElementById('err').innerHTML='Contains special characters.';
	 doc.yourName.focus();
	 doc.yourName.focus();
	return false;
 	}
 }

	}
	

	// For name Stop


if (isEmpty(doc.email.value)) {
			document.getElementById("showerr").style.display="block";
			document.getElementById('err').innerHTML='Please enter your Email address';
			doc.email.focus();
			return false;
		}
    
	
	if(!isEmpty(doc.email.value)) {

		if(!validateEmail(doc.email.value)){
				document.getElementById("showerr").style.display="block";
				document.getElementById('err').innerHTML='Please enter valid Email address';
				doc.email.value='';
				doc.email.focus();
				return false;
		}
	}


	


			// For mobile Start
			if(isEmpty(doc.mob.value)){
				document.getElementById("showerr").style.display="block";
				document.getElementById('err').innerHTML='Please enter your Mobile  number';
				doc.mob.focus();
				return false;
			}
			
			

  			// For mobile Stop



	
	// For  mesage start
	if (isEmpty(doc.message.value)) {
		document.getElementById("showerr").style.display="block";
		document.getElementById('err').innerHTML='Please enter your message';
		doc.message.focus();
		return false;
	}
	
	if (!isEmpty(doc.message.value)) {
		str=(document.getElementById('message')).value;
		flag=validate(str);
		 if(flag==0)
		 {     document.getElementById("showerr").style.display="block";
	 		   document.getElementById('err').innerHTML='Please Valid message.';
	 		   doc.message.focus();
			
		      return false;
		 }
		 
	}
	
}


function validate(str)
{
	
	var myRegExp = /<script/;
	var myRegExp1 = /<input/;
	var myRegExp2 = /<img/;
	var matchPos = str.search(myRegExp);
	var matchPos1 = str.search(myRegExp1);
	var matchPos2 = str.search(myRegExp2);
	if(matchPos != -1 || matchPos1 != -1 || matchPos2 != -1)
   {
	   return 0;
   }
   else
   { return 1;
   }
   

}





<!-- Script by hscripts.com -->


	
	
	
	// For  mesage stop



function isNumberKey(evt)
      {
         var charCode = (evt.which) ? evt.which : evt.keyCode
		 
         if (charCode > 31 && ( (charCode < 48 || charCode > 57) && (charCode > 43 || charCode < 43) ))
            return false;

         return true;
      }



var whitespace =" \t\n\r ";
function isEmpty1(str)
{  
	return ((str == null) || (str.length == 0))
}

function isEmpty(str)
{    var i;
	 var flag
 	 if (isEmpty1(str)) return true;	
	    for (i = 0; i < str.length; i++)
 	   {   
 	       var c = str.charAt(i);

		   if (whitespace.indexOf(c) == -1)
		   		return false
 	   }	
		    return true;
}


function validateEmail(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;
}