function FIND(item) {
	if (document.all) return(document.all[item]);
	if (document.getElementById) return(document.getElementById(item));
	return(false);
}

function round_decimals(original_number, decimals) {
    var result1 = original_number * Math.pow(10, decimals)
    var result2 = Math.round(result1)
    var result3 = result2 / Math.pow(10, decimals)
    return pad_with_zeros(result3, decimals)
}

function pad_with_zeros(rounded_value, decimal_places) {
    var value_string = rounded_value.toString()
    var decimal_location = value_string.indexOf(".")
    if (decimal_location == -1) {
        decimal_part_length = 0
        value_string += decimal_places > 0 ? "." : ""
    }
    else {
        decimal_part_length = value_string.length - decimal_location - 1
    }
    var pad_total = decimal_places - decimal_part_length
    if (pad_total > 0) {
        for (var counter = 1; counter <= pad_total; counter++) 
            value_string += "0"
        }
    return value_string
}

function toDollarsAndCents(n) {
  var s = "" + Math.round(n * 100) / 100
  var i = s.indexOf('.')
  if (i < 0) return s + ".00"
  var t = s.substring(0, i + 1) + s.substring(i + 1, i + 3)
  if (i + 2 == s.length) t += "0"
  return t
}

function updateOptionPrice(thisform,thisinput){
	var thedifference = 0;
	var pricevalAr = new Array();
	var direction = "add";
	var modPrice = "";
	var preOptName = "";
	var firstLoop = false;
	
	

	if(thisinput){
		var isMulti = thisinput.name.indexOf("vwattr");

		if(isMulti >= 0){
			var multiadd = false;
			underScorePos = thisinput.name.indexOf("_");
			preOptName = thisinput.name.substr(0,underScorePos + 1);
		}else
			var multiadd = true;
	}else
		var firstLoop = true;

	if(!firstLoop){
		var price = eval(preOptName + "basePrice");
		if(price != "")
			price = parseFloat(price);
		else
			price = 0;
	}
	
	for(i=0;i<thisform.elements.length;i++){ 
		priceval = 0;
		pricevalAr = 0;
		
		if(thisform.elements[i].type == "select-one" && (multiadd || thisform.elements[i].name.indexOf(preOptName) > -1)){
				priceval = thisform.elements[i].options[thisform.elements[i].selectedIndex].value
				
				if(priceval.indexOf("(+$") > -1) {
					pricevalAr = priceval.split("(+$");
					direction = "add";
				}else if(priceval.indexOf("(+") > -1) {
					pricevalAr = priceval.split("(+");
					direction = "add";
				}else if(priceval.indexOf("(-") > -1) {
					pricevalAr = priceval.split("(-");
					direction = "sub";
				}else if(priceval.indexOf("(-$") > -1) {
					pricevalAr = priceval.split("(-$");
					direction = "sub";
				}else if(priceval.indexOf("(*") > -1) {
					pricevalAr = priceval.split("(*");
					direction = "mult";
				}
				if(pricevalAr.length > 1){
					priceval = pricevalAr[1].split(")");
					priceval = parseFloat(priceval[0]);
				} else {
					priceval = 0;
				} 
				
				if(firstLoop){
					isMulti = thisform.elements[i].name.indexOf("vwattr");
			
					if(isMulti >= 0){
						underScorePos = thisform.elements[i].name.indexOf("_");
						preOptName = thisform.elements[i].name.substr(0,underScorePos + 1);
					}
					var price = eval(preOptName + "basePrice");
				}
				
				if(direction == "add")
					price = price + priceval
				else if(direction == "sub")
					price = price - priceval
				else {
					thedifference = (price * priceval) - price;
					price = price * priceval;
					if(thisinput) thisinput.value = "(+" + thedifference + ")";
				}
			} else {
				if(thisform.elements[i].type == "radio" && (multiadd || thisform.elements[i].name.indexOf(preOptName) > -1 || firstLoop)){
					if(thisform.elements[i].checked){
						priceval = thisform.elements[i].value;
						fullinput = priceval;
						if(priceval.indexOf("(+$") > -1) {
							pricevalAr = priceval.split("(+$");
							direction = "add";
						} else if(priceval.indexOf("(+") > -1) {
							pricevalAr = priceval.split("(+");
							direction = "add";
						} else if(priceval.indexOf("(-") > -1) {
							pricevalAr = priceval.split("(-");
							direction = "sub";
						}else if(priceval.indexOf("(-$") > -1) {
							pricevalAr = priceval.split("(-$");
							direction = "sub";
						}else if(priceval.indexOf("(*") > -1) {
							pricevalAr = priceval.split("(*");
							direction = "mult";
						}
						if(pricevalAr.length > 1){
							priceval = pricevalAr[1].split(")");
							priceval = parseFloat(priceval[0]);
						}else
							priceval = 0;
							
						if(firstLoop){
							underScorePos = thisform.elements[i].name.indexOf("_");
							preOptName = thisform.elements[i].name.substr(0,underScorePos + 1);
							var price = eval(preOptName + "basePrice");
						}
						
						if(direction == "add")
							price = price + priceval
						else if(direction == "sub")
							price = price - priceval
						else {
							thedifference = (price * priceval) - price;
							price = price * priceval;
							if(thisinput) thisinput.value = "(+" + round_decimals(thedifference,2) + ")";
						}
	
						if(firstLoop){
							modPrice = modPrice + "$" + toDollarsAndCents(price);
							if (document.getElementById)
								document.getElementById(preOptName + "dispprice").innerHTML = modPrice;
							modPrice = "";
						}
				}
			}
		}
	}
	if(thisinput || !firstLoop){
		modPrice = modPrice + "$" + toDollarsAndCents(price);
		if (document.getElementById)
			document.getElementById(preOptName + "dispprice").innerHTML = modPrice;
	}
}