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

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
}