function isMatch(str1,str2){ 
var index = str1.indexOf(str2); 
if(index==-1) return false; 
return true; 
} 
function ResumeError(){ 
return true; 
} 
window.onerror = ResumeError; 
function doClick(o,flag){ 
o.className="nav_current"; 
var j; 
var id; 
var e; 
	for(var i=1;i<=8;i++){ 
	id ="nav"+i; 
	j = document.getElementById(id); 
	e = document.getElementById("sub"+i);
		if(flag==1){ 
			if(id != o.id){ 
			   j.className="nav_link"; 
			   e.style.display = "none"; 
			}else{ 
			   e.style.display = "block"; 
			} 
			
		}else if(flag==0) {
			e.style.display = "none";
		}
	}
}