//选择器
function $a(id,tag){var re=(id&&typeof id!="string")?id:document.getElementById(id);if(!tag){return re;}else{return re.getElementsByTagName(tag);}}

//点击框文字消失
function clickInput(id,str){var o=$a(id);o.value=str;o.onclick=function(){this.focus();if(this.value==str){this.value="";}};o.onmouseout=function(){if(this.value==""){this.value=str;}}}


//导航处理
function navs(i){
	$a("navid","a")[i].className="show"+i;
	$a("navibg").className="i"+i;
//	$a("slinkid").className="slink slink"+i;
//	$a("kti").className="kti"+i;
}

function nside(i){
	$a("nsideid","a")[i].className="showside";
	$a("navibg").style.display="none";
	$a("slinkid").className="slink nside"+i;
	$a("kti").className="nsidekti"+i;
}