var Timer = null;
var CurScreen = MaxScreen = 1;
var ii = 0;
function slideplayer(action,index,maxNum) {
	clearTimeout(Timer);
	if (typeof maxNum != 'undefined')MaxScreen = maxNum;
	switch (action) {
		case 'pause' :
			clearTimeout(Timer);
			break;
		case 'goon' :
			clearTimeout(Timer);
			Timer = setTimeout('slideplayer();', 3000);
			break;
		case 'play' :
			CurScreen = index - 1 ;
		default :
			if (CurScreen >= MaxScreen)CurScreen = 0;
			for (i=0;i<MaxScreen;i++) {
				getObj("switch_"+i).style.display = "none";
			}
			if (IsElement("switch_"+CurScreen)){
				//obj = getObj("mengban_"+CurScreen);
				//setTimeout('showalpha(obj,0.5,50)',60);
				//setTimeout('showalpha(obj,0.2,20)',120);
				//setTimeout('showalpha(obj,0,0)',180); 
				//obj.style.opacity="0.7";
				//obj.style.filter="alpha(opacity=70)";
				getObj("switch_"+CurScreen).style.display = "block" ;
			}
			for (i=1;i<=MaxScreen;i++) {
				if (i == CurScreen+1) {
					changec('simg'+i,'sel');
				} else {
					changec('simg'+i,'');
				}
			}
			if (MaxScreen>1) {
				CurScreen++;
				Timer = setTimeout('slideplayer();', 5000);
			}
	}
}
function showalpha(obj,num1,num2){
	obj.style.opacity=num1;
	obj.style.filter="alpha(opacity="+num2+")";	
}