Looping through javascript function
===

I'm trying to loop my if statements inside a while loop through my function. But it will only hit the first if statement and stop looping.

Sample:

    while(No.length ==0 || Name.length ==0 || Tel.length==0 ||Date.length ==0 || Email.length==0)
	{
		alert('Don't leave blank!');
		
		if(No.length==0)
		{
			document.getElementById('Nos').style.visibility = 'visible';
			return false;	
		}
                if(Name.length==0)
                {
                        document.getElementById('Name').style.visibility = 'visible';
			return false;	
                }
                //continues same if statement for rest of the elements variables.
         }
It will only go to the first if statement and will not loop through it. Kindly advise.
