function $(id){return document.getElementById(id);}
function getObj(id){return document.getElementById(id);}
function IsElement(id){
	return document.getElementById(id)!=null ? true : false;
}
function isUndefined(variable) {
	return typeof variable == 'undefined' ? true : false;
}
function changec(id,newclass){
	$(id).className=newclass;	
}
function hack_item(select){
	item_num=3;
	for(i=1;i<=item_num;i++){
		obj1=document.getElementById("remen0"+i);
		obj2=document.getElementById("zhuti0"+i);
		if(i==select){
			obj1.className="active";
			obj2.style.display="block";
		}else{
			obj1.className="";
			obj2.style.display="none";
		}
	}
}
function hack_daohang(select){
	item_num=6;
	for(i=1;i<=item_num;i++){
		obj1=document.getElementById("cmsgg"+i);
		if(i==select){
			obj1.style.display="block";
		}else{
			obj1.style.display="none";
		}
	}
}
function hack_items(select,item_num){
	document.body.focus();
	if(!item_num)item_num=3;
	for(i=1;i<=item_num;i++){
		obj1=document.getElementById("paih0"+i);
		obj2=document.getElementById("pait0"+i);
		if(i==select){
			obj1.className="active";
			obj2.style.display="block";
		}else{
			obj1.className="";
			obj2.style.display="none";
		}
	}
}
function changedisplay(openid,offid1,offid2){
	$(openid).style.display="";
	changec(openid+'_menu','s6');
	$(offid1).style.display="none";
	changec(offid1+'_menu','s8');
	if(IsElement(offid2)){
		$(offid2).style.display="none";
		changec(offid2+'_menu','s8');
	}
}
function changenext(objname,num){
	for(var i=1;i<=num;i++){
		if($(objname+"_"+i).style.display==""){
			now = i;
		}
	}
	if(now==num){
		next=1;
	}else{
		next=now+1;
	}
	for(var i=1;i<=num;i++){
		if(i==next){
			$(objname+"_p").src="images/step/step"+i+".gif";
			$(objname+"_"+i).style.display="";
		}else{
			$(objname+"_"+i).style.display="none";
		}
	}	
}
function changeprev(objname,num){
	for(var i=1;i<=num;i++){
		if($(objname+"_"+i).style.display==""){
			now = i;
		}
	}
	if(now==1){
		prev=num;
	}else{
		prev=now-1;
	}
	for(var i=1;i<=num;i++){
		if(i==prev){
			$(objname+"_p").src="images/step/step"+i+".gif";
			$(objname+"_"+i).style.display="";
		}else{
			$(objname+"_"+i).style.display="none";
		}
	}	
}
function changeh(id,toid){
	$(id).innerHTML = $(toid).innerHTML;
}
//function ResumeError() { 
//return true; 
//} 
//window.onerror = ResumeError;