function showMainMenu(chl){
document.writeln("");
document.writeln(" ");
document.writeln("  | ");
document.writeln(" ");
document.writeln(" | ");
document.writeln(" | ");
document.writeln("
");
document.writeln("
");
document.writeln(" ");
document.writeln(" ");
document.write(" ");
document.write(" ");
document.writeln(" | ");
var str_t="gjyw_05.jpg"
if(chl=="news")str_t="gjyw2_05.jpg";
document.write(" ![新闻中心](/images/gj/"+str_t+") | ");
var str_t="gjyw_07.jpg"
if(chl=="product")str_t="gjyw2_07.jpg";
document.write(" | ");
str_t="gjyw_09.jpg"
if(chl=="services")str_t="gjyw2_09.jpg";
document.writeln(" | ");
str_t="gjyw_11.jpg"
if(chl=="tech")str_t="gjyw2_11.jpg";
document.writeln(" | ");
str_t="gjyw_13.jpg"
if(chl=="sjzq")str_t="gjyw2_13.jpg";
document.writeln(" | ");
str_t="gjyw_15.jpg"
if(chl=="gjyw")str_t="gjyw2_15.jpg";
document.writeln(" | ");
str_t="gjyw_17.jpg"
if(chl=="about")str_t="gjyw2_17.jpg";
document.writeln(" | ");
str_t="gjyw_19.jpg"
if(chl=="job")str_t="gjyw2_19.jpg";
document.writeln(" | ");
document.writeln(" | ");
document.writeln("
");
document.writeln(" ");
document.writeln("
");
}