function showLightbox(){document.getElementById("overlay").style.display="block";document.getElementById("ov_center").style.visibility="visible";if(isMacFire()){document.getElementById("ov_center").style.display="block"}arr=document.getElementsByTagName("select");for(i=0;i<arr.length;i++){arr[i].style.visibility="hidden"}return false}function hideLightbox(){document.getElementById("overlay").style.display="none";document.getElementById("ov_center").style.visibility="hidden";if(isMacFire()){document.getElementById("ov_center").style.display="none"}arr=document.getElementsByTagName("select");for(i=0;i<arr.length;i++){arr[i].style.visibility="visible"}return false}function goto_join_page(a){showLightbox();return void (0)}function initLightBox(){if(isMacFire()&&document.getElementById("ov_center")){document.getElementById("ov_center").style.display="none"}}function isMacFire(){var a=navigator.userAgent;return(a.lastIndexOf("Macintosh")!=-1&&a.lastIndexOf("Firefox")!=-1)};
