Convert a hex value to its decimal value

hextorgb.js

//Convert a hex value to its decimal value - the inputted hex must be in the
//	format of a hex triplet - the kind we use for HTML colours. The function
//	will return an array with three values.
function hex2num(hex) {
	if(hex.charAt(0) == "#") hex = hex.slice(1); //Remove the '#' char - if there is one.
	hex = hex.toUpperCase();
	var hex_alphabets = "0123456789ABCDEF";
	var value = new Array(3);
	var k = 0;
	var int1,int2;
	for(var i=0;i<6;i+=2) {
		int1 = hex_alphabets.indexOf(hex.charAt(i));
		int2 = hex_alphabets.indexOf(hex.charAt(i+1)); 
		value[k] = (int1 * 16) + int2;
		k++;
	}
	return(value);
}
//Give a array with three values as the argument and the function will return
//	the corresponding hex triplet.
function num2hex(triplet) {
	var hex_alphabets = "0123456789ABCDEF";
	var hex = "#";
	var int1,int2;
	for(var i=0;i<3;i++) {
		int1 = triplet[i] / 16;
		int2 = triplet[i] % 16;

		hex += hex_alphabets.charAt(int1) + hex_alphabets.charAt(int2); 
	}
	return(hex);
}