var open_form = null;
function ontop() {
	if (open_form && !open_form.closed) {
		open_form.focus()
	}
}
nereidFadeObjects = new Object();
nereidFadeTimers = new Object();
function nereidFade(object, destOp, rate, delta){
if (!document.all)
return
    if (object != "[object]"){  //do this so I can take a string too
        setTimeout("nereidFade("+object+","+destOp+","+rate+","+delta+")",0);
        return;
    }
    clearTimeout(nereidFadeTimers[object.sourceIndex]);
    diff = destOp-object.filters.alpha.opacity;
    direction = 1;
    if (object.filters.alpha.opacity > destOp){
        direction = -1;
    }
    delta=Math.min(direction*diff,delta);
    object.filters.alpha.opacity+=direction*delta;
    if (object.filters.alpha.opacity != destOp){
        nereidFadeObjects[object.sourceIndex]=object;
        nereidFadeTimers[object.sourceIndex]=setTimeout("nereidFade(nereidFadeObjects["+object.sourceIndex+"],"+destOp+","+rate+","+delta+")",rate);
    }
}

function goToLink(theValue)
{
	if (theValue != "#")
	{
		window.open(theValue,'NewWin');
		
	}
}
function showConditions(id){
	if(document.getElementById('text_more_' + id).innerHTML == '+'){
		document.getElementById('content_' + id).style.display = 'block';
		document.getElementById('text_more_' + id).innerHTML = '-';
	}else{
		document.getElementById('content_' + id).style.display = 'none';
		document.getElementById('text_more_' + id).innerHTML = '+';
	}
}
function liuyan(){
	if(document.getElementById("xm").value == ""){
		alert("尊姓大名不可为空");
		document.getElementById("xm").focus();
		return false;
	}
	if(document.getElementById("lynr").value == ""){
		alert("留言内容不可为空");
		document.getElementById("lynr").focus();
		return false;
	}
	document.getElementById("tijiao").value = "yes";
	document.guestbookform.submit();
}