var BU_nAmount = 0;
var BU_nProductGroupProductRefID = 0;
var	BU_nMonthlyInstalment = 0;

function BottomUp(){

	BU_nMonthlyInstalment = document.form.elements[ 'fnMonthly' + BU_ID ].value;
	BU_nFinancierProductID = document.form.elements[ 'fnFinancierProductID' + BU_ID ].value;
	BU_nDuration = document.form.elements[ 'fnDuration' + BU_ID ].value;
	BU_nProductGroupProductRefID = 0;

	for ( I = items.length - 1; I >= 0; I-- ){
		if ( document.form.elements[ 'fnPrice_' + items[ I ] + BU_ID ] == '[object]' || document.form.elements[ 'fnPrice_' + items[ I ] + BU_ID ] == '[object HTMLInputElement]')
			BU_nProductGroupProductRefID = items[ I ];
	};

	// collect
	var cQry = '';
	cQry += "?nMonthlyInstalment=" + BU_nMonthlyInstalment;
	cQry += "&nFinancierProductID=" + BU_nFinancierProductID;
	cQry += "&nDuration=" + BU_nDuration;
	cQry += "&nProductGroupProductRefID=" + BU_nProductGroupProductRefID;

	document.getElementById( "dv_action_frame" ).src = BU_cRemote + cQry;

}

function BU_process() {
	MIF_Update( document.form.elements[ "fnPrice_" + BU_nProductGroupProductRefID + BU_ID ], BU_nAmount );
	calculate();
	updateTotalPrice();
}