function setTransition(){ 
	if (document.all){ 
			bannerADrotator.filters.revealTrans.Transition=Math.floor(Math.random()*23); 
			bannerADrotator.filters.revealTrans.apply(); 
	} 
} 
function playTransition(){ 
		if (document.all) bannerADrotator.filters.revealTrans.play() 
} 
function nextAd(){ 
		if(adNum<bannerAD.length-1)adNum++ ; 
		else adNum=0; 
		setTransition(); 
		document.images.bannerADrotator.src=bannerAD[adNum]; 
		playTransition(); 
		theTimer=setTimeout("nextAd()", 4000); 
} 
function jump2url(){ 
		jumpUrl=bannerADlink[adNum]; 
		jumpTarget='_blank'; 
		if (jumpUrl != ''){ 
		if (jumpTarget != '')window.open(jumpUrl,jumpTarget); 
		else location.href=jumpUrl; 
	} 
} 
function displayStatusMsg() { 
		status=bannerADlink[adNum]; 
		document.returnValue = true; 
} 
function win_open(url,name,wdth,hght){
 window.open(url,name,'left=100,top=80,width='+wdth+',height='+hght+',status=no,resizable=no,scrollbars=yes');
}

function searcher(thisform)
        {
        	  if(thisform.text_contents.value == '' || thisform.text_contents.value == '--请输入查找文字--')
        			{
        				alert("您还没有输入查询文字！");
        				thisform.text_contents.focus();
        				return false; 	
        			}
        		else
        			{
        				return true;
        			} 	
         }