function ValidateEmail(frm)
{
    var strEmail = frm.value;

	var re = /^\w+[^\s@]*[^\.@][@]{1}\w+[^\s@]*\.{1}\w{2,3}$/; //Regular Expression for Email address  
	var towdot = /\.\./;

	if(strEmail != "")
	{
		if (!(re.test(strEmail))) {
			alert("Invalid Email Address!")
			frm.select();
		}
		else {
		  if (strEmail.search(towdot) != -1) {
			alert("Invalid Email Address!")
			frm.select();
		  }
		  else {
			//alert("OK!");
	        	return true;
		  }
	  }
   }	
}