function showSelects(){
	if(getInternetExplorerVersion()<7 && getInternetExplorerVersion()>0){
	   var elements = document.getElementsByTagName("select");
	   for (i=0;i< elements.length;i++){
	      elements[i].style.visibility='visible';
	   }
	}
}

function hideSelects(){
	if(getInternetExplorerVersion()<7 && getInternetExplorerVersion()>0){

	   var elements = document.getElementsByTagName("select");
	   for (i=0;i< elements.length;i++){
		   elements[i].style.visibility='hidden';
	   }
	}
}


function getInternetExplorerVersion()
// Returns the version of Internet Explorer or a -1
// (indicating the use of another browser).
{
  var rv = -1; // Return value assumes failure.
  if (navigator.appName == 'Microsoft Internet Explorer')
  {
    var ua = navigator.userAgent;
    var re  = new RegExp("MSIE ([0-9]{1,}[\.0-9]{0,})");
    if (re.exec(ua) != null)
      rv = parseFloat( RegExp.$1 );
  }
  return rv;
}