function passwordStrength(password)
{
	var desc = new Array();
	desc[0] = "<font face=Tahoma size= 1pt>Password not entered</font>";
	desc[1] = "<font face=Tahoma size= 1pt>Very Weak</font>";
	desc[2] = "<font face=Tahoma size= 1pt>Weak</font>";
	desc[3] = "<font face=Tahoma size= 1pt>Better</font>";
	desc[4] = "<font face=Tahoma size= 1pt>Medium</font>";
	desc[5] = "<font face=Tahoma size= 1pt>Strong</font>";

	var score   = 0;

	//if password bigger than 5 give 1 point
	if(password.length>0)
	score++;
	if (password.length > 5) 
	{
	//if password has both lower and uppercase characters give 1 point	
	//if ( ( password.match(/[a-z]/) ) && ( password.match(/[A-Z]/) ) ) score++;
	
	if  ( password.match(/[a-z]/)) score++;
	if  ( password.match(/[A-Z]/)) score++;

	//if password has at least one number give 1 point
	if (password.match(/\d+/)) score++;

	//if password has at least one special caracther give 1 point
	if ( password.match(/.[!,@,#,$,%,^,&,*,?,_,`,~,-,(,)]/) )	score++;

	//if password bigger than 12 give another 1 point
	//if (password.length > 12) score++;
		}
	 document.getElementById("passwordDescription").innerHTML = desc[score];
	 document.getElementById("passwordStrength").className = "strength" + score;
}