//###################################################################################
function   ismail(mail){  
  return(new   RegExp(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/).test(mail));  
}  
//###################################################################################
function flash(url, width, height){
	document.write('<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=7,0,19,0" width="' + width + '" height="' + height + '" VIEWASTEXT>');
	document.write('<param name="movie" value="' + url +'">');
	document.write('<param name="quality" value="high">');
	document.write('<PARAM NAME="wmode" VALUE="transparent">');
	document.write('<PARAM NAME=menu VALUE="false">');
	document.write('<embed src="' + url +'" quality="high" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash" width="' + width + '" height="' + height + '"></embed>');
	document.write('</object>');
}
function changpic(v,s){//更改图片
document.getElementById(v).src=s;
}
function update_cart(obb,id){//更新购物车
 if(obb>0){
  mycart.action="buy.php?mid="+id+'&num='+obb;
  mycart.submit();
 }
}
function add_cart(form,id){//加入到购物车
 if(form.num.value>0){
  form.action="buy.php?id="+id;
  form.submit();
 }
}
function show_css(myid){//更改图片
	if(document.getElementById(myid).style.display==""){
		document.getElementById(myid).style.display="none"
	}else{
		document.getElementById(myid).style.display=""
	}
}