function checkform(formno)
{
	var msg = "";
	for ( i= 0 ; i < window.document.forms[formno].elements.length ; i ++)
		{
			if(window.document.forms[formno].elements[i].name.substring(0,3) == "iu-")
				{
					var contrantval = Right(window.document.forms[formno].elements[i].name,1) ;
					switch(contrantval)
					{
						case "0":   //Optional
							
							break;
						case "1":  //Integer
							if(window.document.forms[formno].elements[i].value == "")
							{
								msg = msg + "\n" + window.document.forms[formno].elements[i].id ;
							}
							else 
							{
								if(isNaN(window.document.forms[formno].elements[i].value))
								{
									msg=msg+"\n"+"Please enter numeric value";
								}
								else
								{
									
								}
								
							}
							break;
						case "2":  //Only Sting 
							if(window.document.forms[formno].elements[i].value == "")
							{
								msg = msg + "\n" + window.document.forms[formno].elements[i].id ;
							}
							break;
						case "3": // Email
							if(window.document.forms[formno].elements[i].value == "")
							{
								msg = msg + "\n" + window.document.forms[formno].elements[i].id ;
							}
							else if (emailCheck(window.document.forms[formno].elements[i].value) == false)
  							{
							   // msg="Enter valid email address";
							    return (false);
							}
							break;
						case "4": // Phone
						if(window.document.forms[formno].elements[i].value == "")
						{
							msg = msg + "\n" + window.document.forms[formno].elements[i].id ;
						}
						break;
						case "5": // Alpha numeric
						if(window.document.forms[formno].elements[i].value == "")
						{
							msg = msg + "\n" + window.document.forms[formno].elements[i].id ;
						}
						break;
						case "6": // File
						if(window.document.forms[formno].elements[i].value == "")
						{
							//msg = msg + "\n" + window.document.forms[formno].elements[i].id ;
						}
						case "7": // File
						if(window.document.forms[formno].elements[i].value == "")
						{
							//msg ="Please designate a file to upload";
						}
						break;
						case "8": // File
						if(window.document.forms[formno].elements[i].value.length < "5" || window.document.forms[formno].elements[i].value.length > "13")
						{
							msg =msg+"\n"+"Please Enter password 5 to 13 characters";
						}
						case "9": // File
						if(window.document.forms[formno].elements[i].value == "")
						{
							//msg = msg + "\n" + window.document.forms[formno].elements[i].id ;
						}
						break;
					}
					
				}
		
		}
		if(msg == "")
			return true;
		else
		{
			alert(msg);
			return false;
		}

}
function Left(str, n){
	if (n <= 0)
	    return "";
	else if (n > String(str).length)
	    return str;
	else
	    return String(str).substring(0,n);
}
function Right(str, n){
    if (n <= 0)
       return "";
    else if (n > String(str).length)
       return str;
    else {
       var iLen = String(str).length;
       return String(str).substring(iLen, iLen - n);
    }
}




///email check  validation start
function emailCheck(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="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]"

/* 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. "jiminy 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. joe@[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 john.doe@somewhere.com, john and doe 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("Please enter valid email address (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), 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;
}
/* use
 if (emailCheck(theForm.txt_email_address.value) == false)
  {
    theForm.txt_email_address.focus();
    return (false);
  }

*/


///email check  validation end