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++) {
				$("switch_"+i).style.display = "none";
			}
			if (IsElement("switch_"+CurScreen)){
				ii = CurScreen+1;
				obj = $("slideimg_"+ii);
				setTimeout('showalpha(obj,0.5,50)',60);
				setTimeout('showalpha(obj,0.8,80)',120);
				setTimeout('showalpha(obj,1,100)',180);
				$("slideimg_"+ii).style.opacity="0.3";
				$("slideimg_"+ii).style.filter="alpha(opacity=30)";
				$("switch_"+CurScreen).style.display = "block" ;
			}
			//var NavStr = "" ;
			for (i=1;i<=MaxScreen;i++) {
				//var surl = $("slideimg_"+i).src.replace('.jpg','s.jpg');
				//var surl = 'upload/thumb/'+i+'.jpg';
				if (i == CurScreen+1) {
					//NavStr += '<li><a href="javascript:;" class="sel"><img src="'+surl+'" width=60 height=84></a></li>' ;
					changec('simg'+i,'sel');
				} else {
					changec('simg'+i,'');
					//NavStr += '<li onmouseover="slideplayer(\'play\','+i+');"><a href="javascript:;"><img src="'+surl+'" width=60 height=84></a></li>' ;
				}
			}
			//$("switchnav").innerHTML = NavStr ;
			if (MaxScreen>1) {
				CurScreen++;
				Timer = setTimeout('slideplayer();', 3000);
			}
	}
}
function showalpha(obj,num1,num2){
	obj.style.opacity=num1;
	obj.style.filter="alpha(opacity="+num2+")";	
}