function getObject(objectId) {
    if(document.getElementById && document.getElementById(objectId)) {
	// W3C DOM
	return document.getElementById(objectId);
    } else if (document.all && document.all(objectId)) {
	// MSIE 4 DOM
	return document.all(objectId);
    } else if (document.layers && document.layers[objectId]) {
	// NN 4 DOM.. note: this won't find nested layers
	return document.layers[objectId];
    } else {
	return false;
    }
} 
function rand(num1,num2)
{
	num1=num1 ? num1 : 0;
	if (num2 == null)
	{
		num2 = num1;
		num1 = 0;
	}
	if (num1 > num2)
	{	
		var tmp;
		tmp = num1;
		num1 = num2;
		num2 = tmp;
	}
	var n = Math.random();
	n = Math.ceil(n*(num2 - num1 + 1)) + num1 - 1;
	return n;
}
//¶¯Ì¬ÏÔʾÐéÄ⾯²ì
function setShowContent()
{
	var opp,polic_url,showStr;
	opp=getObject("movieSWF");	
	showStr = '<object  classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,29,0" width="760" height="100">';
	polic_url = rand(1,3);
	if(polic_url == 1)
	{
		showStr += '<param name="movie" id="movie" value ="http://pic.qyule.com/web/images/homepic/110policman.swf">';
	}
	else if(polic_url == 2)
	{
		showStr += '<param name="movie" id="movie" value ="http://pic.qyule.com/web/images/homepic/110policwagon.swf">';		
	}
	else
	{
		showStr += '<param name="movie" id="movie" value ="http://pic.qyule.com/web/images/homepic/110policmoto.swf">';		
	}
		showStr += '<param name="quality" value="high"><embed src="" quality="high" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash" width="760" height="100"></embed></object>';
		opp.innerHTML = showStr;
	
}
function setTime()
{
	setInterval("setShowContent()",1800000);
}