function IsEmailValid(formObj) 
{
var emailStr=formObj
  var emailPat=/^(.+)@(.+)$/
  var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]"
  var validChars="\[^\\s" + specialChars + "\]"
  var quotedUser="(\"[^\"]*\")"
  var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/
  var atom=validChars + '+'
  var word="(" + atom + "|" + quotedUser + ")"
  var userPat=new RegExp("^" + word + "(\\." + word+ ")*$")
  var domainPat=new RegExp("^" + atom + "(\\." +atom +")*$")
  var matchArray=emailStr.match(emailPat)
  if (matchArray==null) 
  {
      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
  }
  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 appears to be invalid!")
               return false
          }
     }
     return true 
  }
  var domainArray=domain.match(domainPat)
  if (domainArray==null) 
  {
     alert("The domain name doesn't appear to be valid.")
     return false
  }
  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 looks  great!
  return true;
}
  
function ValidateNum(input,event)
	{
	var keyCode = event.which ? event.which : event.keyCode;
	if(parseInt(keyCode)>=48 && parseInt(keyCode)<=57)
		{
		return true;
		}
	return false;
	}
	
function checkDot(txt)
{
   var str=String();
   str=txt;
   dot=0;
   for(var i=0;i<str.length;i++)
   {
      var xx =str.substring (i, i+1)
	  if( xx=="." || xx=="," || xx=="/" || xx=="\\" || xx==";" || xx=="'" || xx=="\"" || xx=="!" || xx=="@" || xx=="#" || xx=="$" || xx=="%" || xx=="^" || xx=="&" || xx=="*" || xx=="(" || xx=="\)" || xx=="-" || xx=="_" || xx=="+" || xx=="=" || xx=="|" || xx=="<" || xx==">" || xx=="?" )
	  {
	     dot=dot+1;
	  }
   }
   if(dot>0)
	  return true;
   else
	  return false;
}
function isValid()
{
  var x;
  var y;
 
   x=document.forms[0].MERGE0.value;
   if(x==0 || checkDot(x) ) 
  {
    	alert("Please Enter address");
    	document.forms[0].MERGE0.value="";
		document.forms[0].MERGE0.focus();
		return false
  }
 
  
  x=document.forms[0].MERGE0.value;
if(x==0 || IsEmailValid(x)==false)
{
if(document.forms[0].MERGE0.value=='')
{
alert("Please Enter your email address");
}
		document.forms[0].MERGE0.focus();
		return false
  }
   
  }