CONVERSION AVEC OPÉRATEUR BINAIRE

function dec2bas(nombre,base)
{
	if (!getDecalageFromBase(base))
	{
		alert("Base Invalide");
		return false;
	}
	
	equivalent = new Array("0","1","2","3","4","5","6","7","8","9","a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v");
	decalage = getDecalageFromBase(base);
	result = "";
	while(nombre != 0)
	{
		result = equivalent[nombre&(base-1)]+result;
		nombre >>= decalage;
	}
	return result;
}

function bas2dec(nombre,base)
{
	nombre = nombre.reverse();
	equivalent = new Array("0","1","2","3","4","5","6","7","8","9","a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v");
	result = 0;
	for (i=0;i<nombre.length;i++)
	{
		result += equivalent.array_search(nombre.charAt(i))*Math.pow(base,i);
	}
	return result;
}

function getDecalageFromBase(base)
{
	i = 1;
	while (Math.pow(base,(1/i)) != 2)
	{
		if (i>base)
		{
			return false;
		}
		i++;
	}
	return i;
}

function array_search(text)
{
	for (a=0;a<this.length;a++)
	{
		if(this[a] == text)
		{
			return a;
		}
	}
}

function reverse()
{
	result = "";
	for (i=this.length-1;i>=0;i--)
	{
		result += this.charAt(i);
	}
	return result;
}

Array.prototype.array_search = array_search;
String.prototype.reverse = reverse;