function cnyprice(str){	 
	var real =	parseFloat(str.substring(3));	
	real = real*6.8;	
	document.write(real.toFixed(2));
}

/**
 * Function name : 
 * Author : coco
 * Expression : 
 */
function classSwitch(now,sum,pre,style){
    for(i=1;i<=sum;i++){
        document.getElementById(pre+i).className = '';
        if(i==now){
            document.getElementById(pre+i).className = style;    
        }
    }
}