function checkRadios()
	{
 	var el = document.forms[0].elements;
 	for(var i = 0 ; i < el.length ; ++i)
		{
  		if(el[i].type == "radio")
			{
   			var radiogroup = el[el[i].name]; // get the whole set of radio buttons.
   			var itemchecked = false;
   			for(var j = 0 ; j < radiogroup.length ; ++j)
				{
    				if(radiogroup[j].checked)
					{
	 				itemchecked = true;
	 				break;
					}
   				}
   			if(!itemchecked)
				{ 
    				alert("Please choose a Mock Test");
    				if(el[i].focus)
     				el[i].focus();
				return false;
   				}
  			}
 		}
 	return true;
	}