function zb_show(tx){if(tx==1){document.getElementById(1).style.backgroundImage="url(/images/ghj_18.gif)";}else{document.getElementById(1).style.backgroundImage="url(/images/ghj_19.gif)";}if(tx==3){document.getElementById(3).style.backgroundImage="url(/images/ghj_18.gif)";}else{document.getElementById(3).style.backgroundImage="url(/images/ghj_19.gif)";}if(tx==7){document.getElementById(7).style.backgroundImage="url(/images/ghj_18.gif)";}else{document.getElementById(7).style.backgroundImage="url(/images/ghj_19.gif)";}if(tx==12){document.getElementById(12).style.backgroundImage="url(/images/ghj_18.gif)";}else{document.getElementById(12).style.backgroundImage="url(/images/ghj_19.gif)";}if(tx==18){document.getElementById(18).style.backgroundImage="url(/images/ghj_18.gif)";}else{document.getElementById(18).style.backgroundImage="url(/images/ghj_19.gif)";}if(tx==20){document.getElementById(20).style.backgroundImage="url(/images/ghj_18.gif)";}else{document.getElementById(20).style.backgroundImage="url(/images/ghj_19.gif)";}if(tx==22){document.getElementById(22).style.backgroundImage="url(/images/ghj_18.gif)";}else{document.getElementById(22).style.backgroundImage="url(/images/ghj_19.gif)";}if(tx==24){document.getElementById(24).style.backgroundImage="url(/images/ghj_18.gif)";}else{document.getElementById(24).style.backgroundImage="url(/images/ghj_19.gif)";}if(tx==26){document.getElementById(26).style.backgroundImage="url(/images/ghj_18.gif)";}else{document.getElementById(26).style.backgroundImage="url(/images/ghj_19.gif)";}if(tx==28){document.getElementById(28).style.backgroundImage="url(/images/ghj_18.gif)";}else{document.getElementById(28).style.backgroundImage="url(/images/ghj_19.gif)";}}