function ShowTabs(ID,pos){
		if(ID!=eval("aID_"+pos)){
			eval("TabTitle_"+pos+"[aID_"+pos+"].className='MutiPage2'");
			eval("TabTitle_"+pos+"[ID].className='MutiPage1'");
			eval("Tabs_"+pos+"[aID_"+pos+"].style.display='none'");
			eval("Tabs_"+pos+"[ID].style.display=''");
			eval("aID_"+pos+"=ID");
		 }
	}





	// show modal dialog
	function showModal(sURL, height, width) {
		var sFeatures = "";
		
		if (!isNull(height)) sFeatures +="dialogHeight:" + height + "px;";
		if (!isNull(width)) sFeatures += "dialogWidth:" + width + "px;";
		sFeatures += "center:yes;help:no;resizable:no;status:no;";
		
		return window.showModalDialog(sURL, null, sFeatures);
	}
	
	// judge if the argument is null
	function isNull(arg) {
		return (arg == null || arg == undefined || isNaN(arg));		
	}
	
	// judge if the argument is empty
	function isEmpty(arg) {
		return (arg == "");
	}
	
	// Return true if value is a number
	function isNumber(value) {
	    if (value=="") return false;
	
	    var d = parseInt(value);
	    if (!isNaN(d)) return true; else return false;
	
	}
	
	// Return true if value is an e-mail address
	function isEmail(value) {
	        invalidChars = " /:,;";
	        if (value=="") return false;
	
	        for (i=0; i<invalidChars.length;i++) {
	           badChar = invalidChars.charAt(i);
	           if (value.indexOf(badChar,0) != -1) return false;
	        }
	
	        atPos = value.indexOf("@", 1);
	        if (atPos == -1) return false;
	        if (value.indexOf("@", atPos + 1) != -1) return false;
	
	        periodPos = value.indexOf(".", atPos);
	        if (periodPos == -1) return false;
	
	        if (periodPos+3 > value.length) return false;
	
	        return true;
	}

	// return true if value is a date
	// ie in the format XX/YY/ZZ where XX YY and ZZ are numbers
	function isDate(value) {
	        if (value=="") return false;
	
	        var pos = value.indexOf("/");
	        if (pos == -1) return false;
	        var d = parseInt(value.substring(0,pos));
	        value = value.substring(pos+1, 999);
	        pos = value.indexOf("/");
	        if (pos==-1) return false;
	        var m = parseInt(value.substring(0,pos));
	        value = value.substring(pos+1, 999);
	        var y = parseInt(value);
	        if (isNaN(d)) return false;
	        if (isNaN(m)) return false;
	        if (isNaN(y)) return false;
	
	        var type=navigator.appName;
	        if (type=="Netscape") var lang = navigator.language;
	        else var lang = navigator.userLanguage;
	        lang = lang.substr(0,2);
	
	        if (lang == "fr") var date = new Date(y, m-1, d);
	        else var date = new Date(d, m-1, y);
	        if (isNaN(date)) return false;
	        return true;
	 }
	 
	//随内容调整iframe的大小，用法：<iframe id="ifColumn" name="ifColumn" onload="setIframSize('ifColumn')"></iframe>
	function setIframSize(framName){   
		document.getElementById(framName).style.height = eval(framName+".document").body.scrollHeight+20   
		document.getElementById(framName).style.width = eval(framName+".document").body.scrollWidth+20   
	}   	 
	
	
								
	function play(url) {
		MediaPlayer.URL = url;
		MediaPlayer.controls.play();
	}
	


	function showToday(){
	　　var today=new Date(); 
	　　var week=new Array(7); 
	　　week[0]="天"; 
	　　week[1]="一"; 
	　　week[2]="二"; 
	　　week[3]="三"; 
	　　week[4]="四"; 
	　　week[5]="五"; 
	　　week[6]="六"; 
	　　document.write("今天是 "+today.getYear()+"年"+(today.getMonth()+1)+"月"+today.getDate()+"日  星期"+week[today.getDay()]); 
}