function getObject(objectId) {
   if(document.getElementById && document.getElementById(objectId)) {
// W3C DOM
return document.getElementById(objectId);
   } else if (document.all && document.all(objectId)) {
// MSIE 4 DOM
return document.all(objectId);
   } else if (document.layers && document.layers[objectId]) {
// NN 4 DOM.. note: this won't find nested layers
return document.layers[objectId];
   } else {
return false;
   }
}

function Check(n) {
	var obj = document.getElementById("menu"+n)
	if (obj.style.display=="none") {
		obj.style.display=""
	}else {
		obj.style.display="none"
	}
}

function showValue(n,nTxt) {
	var obj = document.getElementById("thisInput"+n)
	obj.value = nTxt
	document.getElementById("menu"+n).style.display="none"
}

<!--
//元素名称：m_n; tab_m_n
//count:交换的个数
function showtab(m,n,count){
	var strPic1='';
	var strPic2='';
	var strCls1='fb';
	var strCls2='';

	for(var i=1;i<=count;i++){
		if (i==n){			
			getObject(m+'_'+i).style.background=strPic1;
			getObject('tab_'+m+'_'+i).style.display='';
			getObject(m+'_'+i).className=strCls1;
			}
		else {
			getObject(m+'_'+i).style.background=strPic2;
			getObject('tab_'+m+'_'+i).style.display='none';
			getObject(m+'_'+i).className=strCls2;
			}
	}
}
//-->