// javascript document
function g(objname){if(document.getelementbyid){return eval('document.getelementbyid("'+objname+'")')}else{return eval('document.all.'+objname)}}
function get_checkcode() {
	var dv_checkcodefile = "bhajax/checkcode.php";
	if(g("checkid"))
		g("checkid").innerhtml = '<img src="'+dv_checkcodefile+'?t='+math.random()+'" alt="点击刷新验证码" style="cursor:pointer;border:0;vertical-align:middle;height:20px;" onclick="this.src=\''+dv_checkcodefile+'?t=\'+math.random()" />'
}