function toggle(box){
 if(document.getElementById(box).style.visibility == "hidden"){
   document.getElementById(box).style.visibility = "visible";
 }else{
   document.getElementById(box).style.visibility = "hidden";
 }
}

function toggleDisplay(box){

 if(document.getElementById(box).style.display == "none"){
   document.getElementById(box).style.display = "block";
 }else{
   document.getElementById(box).style.display = "none";
 }
}


function getQueryVariable(variable)
{
          var query = window.location.search.substring(1);
          var vars = query.split("&");
          for (var i=0;i<vars.length;i++) {
                    var pair = vars[i].split("=");
                    if (pair[0] == variable) {
                                        return pair[1];
                                       }
	     }
}