function checkFields(){
	if(document.form.name.value=="") {
		alert("请输入用户名");		
		document.form.name.focus();
		return false ;
	}
	if(document.form.password.value=="") {
		alert("请输入密码");		
		document.form.password.focus();
		return false ;
	}
	return true ;
}

function checkTrade(){
/*
	if(document.trade_form.goods_name.value=="") {
		alert("请输入商品名称");		
		document.trade_form.goods_name.focus();
		return false ;
	}
*/
	return true ;
}


function checkInfo(){
	/*
	if(document.info_form.search_key.value=="") {
		alert("请输入关键字");		
		document.info_form.search_key.focus();
		return false ;
	}
	*/
	return true ;
}

function popwin(id) {
	var newwin1=window.open(id,"sifang_trade","height=160,width=600,top=0,left=0,resizable=yes,scrollbars=yes,status=no,toolbar=no,menubar=no,location=no");
	newwin1.focus();
}

function pop(id) {
	var newwin2=window.open(id,"sifang_info","height=500,width=505,top=0,left=0,scrollbars=yes,status=no,toolbar=no,menubar=no,location=no");
	newwin2.focus();
}