function showTitle()
	{
		if(document.getElementById("key").value=="搜索相关文章，请添入搜索关键字")
			document.getElementById("key").value="";
	}
	function moveon()
	{
		document.getElementById("key").selectall();
	}
	function moveout()
	{
		if(document.getElementById("key").value=="")
			document.getElementById("key").value="搜索相关文章，请添入搜索关键字";
		else
		{
			document.getElementById("vle").value=document.getElementById("key").value;
			document.getElementById("keyword").value=document.getElementById("key").value;
		}
	}

	function ad(titl,valu,bar)
	{
		var f=false;
		if(valu=="")
			return;
		else
		{
			for(i=0;i<bar.length;i++)
				if(bar.options[i].value==valu)
					f=true;
			if(!f)
				bar.add(new Option(titl,valu));
		}
	}
	function remov(bar)
	{
		if(bar.selectedIndex<0)
			return;
		bar.remove(bar.selectedIndex);
	}
	function subform()
	{
		if((document.getElementById("price_from").value!="0")&&(document.getElementById("price_to").value!="0")&&
			(parseInt(document.getElementById("price_from").value)>(parseInt(document.getElementById("price_to").value))))
		{
			alert("您输入的价格有误"+"\n请参看搜索说明。");
			return false;
		}
		if((document.getElementById("year_from").value!="0")&&(document.getElementById("year_to").value!="0")&&
			(parseInt(document.getElementById("year_from").value)>(parseInt(document.getElementById("year_to").value))))
		{
			alert("您输入的上市年代有误"+"\n请参看搜索说明。");
			return false;
		}
		if((document.getElementById("DV_from").value!="0")&&(document.getElementById("DV_to").value!="0")&&
			(parseInt(document.getElementById("DV_from").value)>(parseInt(document.getElementById("DV_to").value))))
		{
			alert("您输入的像素有误"+"\n请参看搜索说明。");
			return false;
		}
	
		var MBStr="";
		var BFStr="";
		var AFStr="";
		var AF2Str="";
		for(i=0;i<document.getElementById("changshang0").length;i++)
		{
			document.getElementById("changshang0").options[i].selected=true;
			MBStr=MBStr+document.getElementById("changshang0").options[i].value+"b";
		}
		for(i=0;i<document.getElementById("BaseFun0").length;i++)
		{
			document.getElementById("BaseFun0").options[i].selected=true;
			BFStr=BFStr+document.getElementById("BaseFun0").options[i].value+"b";
		}
		for(i=0;i<document.getElementById("AdvanceFun0").length;i++)
		{
			document.getElementById("AdvanceFun0").options[i].selected=true;
			AFStr=AFStr+document.getElementById("AdvanceFun0").options[i].value+"b";
		}
		for(i=0;i<document.getElementById("AdditiveFun0").length;i++)
		{
			document.getElementById("AdditiveFun0").options[i].selected=true;
			AF2Str=AF2Str+document.getElementById("AdditiveFun0").options[i].value+"b";
		}
		document.getElementById("Fun").value=MBStr+"z"+BFStr+AFStr+AF2Str;
	}
	function SearchCheck()
	{
		if((document.getElementById("vle").value=="")||(document.getElementById("keyword").value==""))
		{
			alert("请添入搜索关键字");
			return false;
		}
	}

	var tab1Pre="main_searchengine_shoujipinpai_";
	var tab2Pre="main_searchengine_jibengongneng_";
	var tab3Pre="main_searchengine_gaojigongneng_";
	var tab4Pre="main_searchengine_fujiagongneng_";
	function showLayer(layerName)
	{
		eval('document.getElementById('+"'"+layerName+"'"+').style.visibility="visible"');
	}
	function hideLayer(layerName)
	{
		eval('document.getElementById('+"'"+layerName+"'"+').style.visibility="hidden"');
	}
	var activeImgName="img1";
	var loaded=false;
	if(document.images)
	{
		img1off=new Image();img1off.src="/images/"+tab1Pre+"0.gif";
		img2off=new Image();img2off.src="/images/"+tab2Pre+"0.gif";
		img3off=new Image();img3off.src="/images/"+tab3Pre+"0.gif";
		img4off=new Image();img4off.src="/images/"+tab4Pre+"0.gif";
		img1on=new Image();  img1on.src="/images/"+tab1Pre+"1.gif";
		img2on=new Image();  img2on.src="/images/"+tab2Pre+"1.gif";
		img3on=new Image();  img3on.src="/images/"+tab3Pre+"1.gif";
		img4on=new Image();  img4on.src="/images/"+tab4Pre+"1.gif";
	}
	function updateTabs(imgName)
	{
		if(imgName==activeImgName)
			return;
	
		if (document.images)
		{
			document[imgName].src=eval(imgName+"on.src");
			document[activeImgName].src=eval(activeImgName+"off.src");
			activeImgName=imgName;
		}
	}