gistfile1.js

function alex_hash() {
	var hash = 0;
	if (this.length == 0) return hash;
	for (i = 0; i < this.length; i++) {
		char = this.charCodeAt(i);
		hash1 = ((char)-hash)+char;
                hash2 = ((char<<8)-hash)+char;
                hash3 = ((char<<16)-hash)+char;
                hash4 = ((char<<24)-hash)+char;
		hash = (hash1 ^ hash2 ^ hash3 ^ hash4) & 0xFFFFFF; 
	}
	return hash;
}