function form_Validation(){
var img_error = "";
var hd = document.subscribe;
//////////////////////////////////////
		if(hd.email_to.value == ""){
			alert("Please enter email.");
			hd.email_to.focus();
			return false;
		}
		///////////////
	if ((hd.email_to.value == "") || 
(hd.email_to.value.indexOf('@') == -1) || 
(hd.email_to.value.indexOf('.') == -1)){
alert("invalid email addess.");
	hd.email_to.focus();
			return false;
}

//////////////////////////////////
		return true;
	}