function Controlamount( amount, id ){
		ref = document.getElementById("reference__" + id ).value*1;

		if( amount > ref  || isNaN(parseFloat(ref)) || ref % amount == 1 ) 
			{
				if( ref % amount == 1 )
						valued = ref+1;
					else
						valued = amount;
				if(confirm( "Quantity rejected!\nWe recommend " + valued + " units"))
				{	if( ref % amount == 1 )
						document.getElementById("reference__" + id ).value = ref+1;
					else
						document.getElementById("reference__" + id ).value = amount;
				}else{
					document.getElementById("reference__" + id ).value = "";
				}
			}
			

}