Hi,

I need some help with my code.

I have everything working but I intend to turn it more simple and small.

I have a form that a user choose between two dates and the choose a category. Then in javascript code calculate the total of days, check if the days are in a low, medium or high season and then go to a table with prices and then return the full price.

This is part of my code:
Code:
var a_low_2=39;		var a_low_4=55;		var a_low_5=68;			var a_low_7=88;
var a_mid_2=63;		var a_mid_4=88;		var a_mid_5=110;		var a_mid_7=129;
var a_high_2=75;	var a_high_4=110;	var a_high_5=130;		var a_high_7=173;

var a1_low_2=58;	var a1_low_4=116;	var a1_low_5=145;		var a1_low_7=196;
var a1_mid_2=224;	var a1_mid_4=116;	var a1_mid_5=145;		var a1_mid_7=196;
var a1_high_2=58;	var a1_high_4=116;	var a1_high_5=145;		var a1_high_7=196;

if (season=="low" && car_choose=="a")
{
	switch(total_days)
	{
		case 1: 	payment=a_low_2;	break;
		case 2: 	payment=a_low_2;	break;
		case 3: 	payment=a_low_4;	break;
		case 4: 	payment=a_low_4;	break;
		case 5: 	payment=a_low_5;	break;
		case 6: 	payment=a_low_7;	break;
		case 7: 	payment=a_low_7;	break;
		default: 	payment=(a_low_7/7)*total_days;
	}
}
if (season=="mid" && car_choose=="a")
{
	switch(total_days)
	{
		case 1: 	payment=a_mid_2;	break;
		case 2: 	payment=a_mid_2;	break;
		case 3: 	payment=a_mid_4;	break;
		case 4: 	payment=a_mid_4;	break;
		case 5: 	payment=a_mid_5;	break;
		case 6: 	payment=a_mid_7;	break;
		case 7: 	payment=a_mid_7;	break;
		default: 	payment=(a_mid_7/7)*total_days;
	}
}
if (season=="high" && car_choose=="a")
{
	switch(total_days)
	{
		case 1: 	payment=a_high_2;	break;
		case 2: 	payment=a_high_2;	break;
		case 3: 	payment=a_high_4;	break;
		case 4: 	payment=a_high_4;	break;
		case 5: 	payment=a_high_5;	break;
		case 6: 	payment=a_high_7;	break;
		case 7: 	payment=a_high_7;	break;
		default: 	payment=(a_high_7/7)*total_days;
	}
}
if (season=="low" && car_choose=="a1")
{
	switch(total_days)
	{
		case 1: 	payment=a1_low_2;	break;
		case 2: 	payment=a1_low_2;	break;
		case 3: 	payment=a1_low_4;	break;
		case 4: 	payment=a1_low_4;	break;
		case 5: 	payment=a1_low_5;	break;
		case 6: 	payment=a1_low_7;	break;
		case 7: 	payment=a1_low_7;	break;
		default: 	payment=(a1_low_7/7)*total_days;
	}
}
if (season=="mid" && car_choose=="a1")
{
	switch(total_days)
	{
		case 1: 	payment=a1_mid_2;	break;
		case 2: 	payment=a1_mid_2;	break;
		case 3: 	payment=a1_mid_4;	break;
		case 4: 	payment=a1_mid_4;	break;
		case 5: 	payment=a1_mid_5;	break;
		case 6: 	payment=a1_mid_7;	break;
		case 7: 	payment=a1_mid_7;	break;
		default: 	payment=(a1_mid_7/7)*total_days;
	}
}
if (season=="high" && car_choose=="a1")
{
	switch(total_days)
	{
		case 1: 	payment=a1_high_2;	break;
		case 2: 	payment=a1_high_2;	break;
		case 3: 	payment=a1_high_4;	break;
		case 4: 	payment=a1_high_4;	break;
		case 5: 	payment=a1_high_5;	break;
		case 6: 	payment=a1_high_7;	break;
		case 7: 	payment=a1_high_7;	break;
		default: 	payment=(a1_high_7/7)*total_days;
	}
}
And I have this from the letter "A" to "J".

I pretend to have something more simples like:

Code:
if (season=="low")
{
	switch(total_days)
	{
		case 1: 	payment=car_choose + _low_2;	break;
		case 2: 	payment=car_choose + _low_2;	break;
		case 3: 	payment=car_choose + _low_4;	break;
		case 4: 	payment=car_choose + _low_4;	break;
		case 5: 	payment=car_choose + _low_5;	break;
		case 6: 	payment=car_choose + _low_7;	break;
		case 7: 	payment=car_choose + _low_7;	break;
		default: 	payment=(car_choose + _low_7/7)*total_days;
	}
}
//And the same for the other two seasons...
But the result of this code is the name of the variable, not the value.

Can someone tell me how can I join 2 variable to turn in to one and the get the value of that variable e note the name?

Thank you in advance.