function computeWT()
{
    var dwt = 0		 // drive wheel torque
    var rr = 0	  // tire rolling radius in feet
	var wt = 0		  // wheel thrust, what we're
			  		  //     solving for
    while (dwt ==0)
    {
        dwt = prompt("Enter the DRIVE WHEEL TORQUE of the bike - ", 0);
    }					  					  
    while (rr ==0)
    {
        rr = prompt("Enter the ROLLING RADIUS of the rear wheel (in feet) - ", 0);
    }	
	wt = dwt/rr
	wt = wt + " ";
    if (wt != 0);
    {
        alert("Your WHEEL THRUST is " + wt.substring(0,6));
    }
}