document.writeln('<select  style="font-size:14px;height:25px;width:158px;text-align:center;" onchange="if(this.value!=\'\'){window.open(this.value,\'_blank\')}"><option value=\'\'>----政府机关----</option></select>');document.writeln('<select  style="font-size:14px;height:25px;width:158px;text-align:center;" onchange="if(this.value!=\'\'){window.open(this.value,\'_blank\')}"><option value=\'\'>----环保系统----</option></select>');document.writeln('<select  style="font-size:14px;height:25px;width:158px;text-align:center;" onchange="if(this.value!=\'\'){window.open(this.value,\'_blank\')}"><option value=\'\'>----首创分布----</option></select>');document.writeln('<select  style="font-size:14px;height:25px;width:158px;text-align:center;" onchange="if(this.value!=\'\'){window.open(this.value,\'_blank\')}"><option value=\'\'>----水务系统----</option></select>');document.writeln('<select  style="font-size:14px;height:25px;width:158px;text-align:center;" onchange="if(this.value!=\'\'){window.open(this.value,\'_blank\')}"><option value=\'\'>----其它链接----</option></select>');