function $(id)
    {
        return document.getElementById(id);
    }


var banner_1_mouseEvent = 1;

 
 
function showBestL(str)
{
	
	for(i=1;i<=3;i++){
		var objs = document.getElementById("bestL"+i);
		var objimg = document.getElementById("tImg"+i);
		
		if(i==str){
			objs.style.display = "inline";
			objimg.src = "/images/unitPriceTab0"+i+"_on.gif";			
		}else{		
			objs.style.display = "none";
			objimg.src = "/images/unitPriceTab0"+i+".gif";
		}
	}
	
}

  
function showChiL(str)
{
	
	for(i=1;i<=2;i++){
		var objs = document.getElementById("chiL"+i);
		var objimg = document.getElementById("cImg"+i);
		
		if(i==str){
			objs.style.display = "inline";
			objimg.src = "/images/chiPriceTab0"+i+"_on.gif";			
		}else{		
			objs.style.display = "none";
			objimg.src = "/images/chiPriceTab0"+i+".gif";
		}
	}
	
}


   
function showDisL(str)
{
	
	for(i=1;i<=3;i++){
		var objs = document.getElementById("disL"+i);

		var objimg = document.getElementById("dImg"+i);
		
		if(i==str){
			objs.style.display = "inline";
			objimg.src = "/images/disPriceTab0"+i+"_on.gif";			
		}else{		
			objs.style.display = "none";
			objimg.src = "/images/disPriceTab0"+i+".gif";
		}
	}
	
}


//更换验证码
function change(s)
{

$(s).src+="?";

}



function chk(o){
var t = parseFloat(o.value);
if (isNaN(t))
	o.value='';
else if (t!=o.value)
	o.value=t;
   
 }