function changecss(theClass,element,value)
 		{
 		  var cssRules;
      	  if (document.all)
      	    { cssRules = 'rules'; }
      	  else if (document.getElementById)
      	    { cssRules = 'cssRules'; }
      	  for (var S = 0; S < document.styleSheets.length; S++)
      	  {
    for (var R = 0; R < document.styleSheets[S][cssRules].length; R++)
           	{
               if (document.styleSheets[S][cssRules][R].selectorText == theClass)
                { document.styleSheets[S][cssRules][R].style[element] = value; }
         	}
     	  }    
 		}