function check1(form11) {
	if (form11.product_name.value==""){
		alert("请输入要查找的商品名关键字");
		return (false);
	}
	if ((form11.product_name.value.indexOf("'",0)!==-1)||(form11.product_name.value.indexOf('"',0)!==-1)){
		alert ("不能输入引号");
		return (false);	
	}
return (true);
}
str="<link rel='stylesheet' type='text/css' href='/cc/css.css'>";
str=str+"<TABLE bgColor=#cccccc border=0 cellPadding=1 cellSpacing=0 width=150><TR><TD> ";
str=str+"<TABLE bgColor=#f6f6f6 border=0 cellPadding=0 cellSpacing=0 height=48 width=148>";
str=str+"<FORM action=http://www.17web.net/info/news/search.asp method=post onsubmit='return check1(this);'>";
str=str+"<TR><TD width=148 align=center><INPUT name=product_name  onMouseOver='this.focus()'  onFocus='this.select()' size=20 maxLength=40 value='仪器搜索关键字'>";
str=str+"</TD><TR><TD width=148 align=center><select name=catalog_id><option value=0 selected>综 合</option></select><INPUT name=submit type=submit value=仪器搜索></TD></TR></FORM>";
str=str+"</TABLE></TD></TR></TABLE>";
document.write(str);