Adding Variable Numbers

[falsepride]

in a script im writing, i need to add and multiply variables that represent numbers. how do i add the numbers together, everything i try just attaches the variable on the end of the other.

[sde]

check this code out.. you probably need to use 'parseInt' on your variable because javascript thinks it is a string.

<Script language="Javascript">
var a = "1";
document.write(a+9);
document.write("<br>");

var c = parseInt(a);
document.write(c+9);
</script>