function echeck(str) {
  		var at="@";
  		var dot=".";
  		var lat=str.indexOf(at);
  		var lstr=str.length;
  		var ldot=str.indexOf(dot);
  		if (str.indexOf(at)==-1) return false;  
  		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr) return false;
  		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr) return false;
  		if (str.indexOf(at,(lat+1))!=-1) return false;
      if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot) return false;  
  		if (str.indexOf(dot,(lat+2))==-1) return false;
  		if (str.indexOf(" ")!=-1) return false;
   		return true;	
  	}				
		

/**
 * DHTML phone number validation script. Courtesy of SmartWebby.com (http://www.smartwebby.com/dhtml/)
 */

// Declaring required variables
var digits = "0123456789";
// non-digit characters which are allowed in phone numbers
var phoneNumberDelimiters = "()- ";
// characters which are allowed in international phone numbers
// (a leading + is OK)
var validWorldPhoneChars = phoneNumberDelimiters + "+";
// Minimum no of digits in an international phone no.
var minDigitsInIPhoneNumber = 10;

function isInteger(s) {
   var i;
    for (i = 0; i < s.length; i++) {   
        // Check that current character is number.
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    // All characters are numbers.
    return true;
}

  function stripCharsInBag(s, bag) {
    var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not in bag, append to returnString.
    for (i = 0; i < s.length; i++)
    {   
        // Check that current character isn't whitespace.
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
  }
	
			
	function checkInternationalPhone(strPhone) {
    s = stripCharsInBag(strPhone,validWorldPhoneChars);
    return (isInteger(s) && s.length >= minDigitsInIPhoneNumber);
  }