function hiddenall_table() {

	document.all.jichu.style.display="none";
	document.all.biaozhun.style.display="none";
	document.all.zhuanye.style.display="none";
}

function turnit(sss) {
    var ss = document.getElementById(sss);
	
    if (ss.style.display=="none") {	
        ss.style.display="";
    }
    else {
        ss.style.display="none";
    }
}

function showtable(tableid)
{
whichtable=eval("table"+tableid);
if(whichtable.style.display=="none")
{eval("table"+tableid+".style.display=\"\";");}
else
{eval("table"+tableid+".style.display=\"none\";");}
}