function Validate(){
	var option=document.addtocartform.Ysubproductdropdown
   	if ((option.value==null)||(option.value==""))
	{
		alert("Please select an option!!")
		option.focus()
		return false;
	}	
	return true;
}


    var submitcount = 0;
    function checkFields(){
        if (submitcount == 0) {
            submitcount ++;
            return true;
        }
        else {
            alert("Transaction is in progress.");
            return false;
        }
    }