/*
	必须先加载的常用基础函数
*/

function isUndefined(variable) {
	return typeof variable == 'undefined' ? true : false;
}
function $(id) {
	return document.getElementById(id);
}
function checkAll(form, name) {
	for(var i = 0; i < form.elements.length; i++) {
		var e = form.elements[i];
		if(e.name.match(name)) {
			e.checked = form.elements['chkall'].checked;
		}
	}
}
function tabcate(i){
	document.topseach.type.value=i;
	for(var j=0;j<5;j++){
		document.getElementById('tab_'+j).className="";
	}	
	document.getElementById('tab_'+i).className="searchhover";
}
function changyong(){document.getElementById('changyong_list').style.display="block";	}
function changyongout(e){document.getElementById('changyong_list').style.display="none";	stopPropagation(e);}

var userAgent = navigator.userAgent.toLowerCase();