function scCleanPrice(val){
		var regex = /[0-9]*\.[0-9]*/;
		// test if price is available
		if(regex.test(val)){
			var readyprice = val.match(regex);
			return parseFloat(readyprice);
		} else {
			return false;
		}
}
function scAlterPrice(val,inc){
	var pricecont = SC.getById("multip"+inc);
	// get core price
	var coreprice = eval("multiprice"+inc);
	// clean select value
	var addPrice = scCleanPrice(val);
	// add core and select value
	if(addPrice){
		var final = coreprice+addPrice;
	} else {
		var final = coreprice;
	}
	pricecont.childNodes[1].innerHTML = "$"+final.toFixed(2);
}