var killMenu;
	
	function changeMenu(nSpanNumber, nIEOffsetPos, strListItem){
		var objDivMenu;
		var objTdMenu;
		var nLeftPos;
		
		deleteMenu();
		
		objTdMenu = document.getElementById(strListItem);
		nLeftPos = nIEOffsetPos + objTdMenu.offsetLeft - 2;

		if (window.navigator.appName=="Netscape"){
			document.getElementById(arrHiddenMenus[nSpanNumber]).style.setProperty("left", nLeftPos+"px", "");
			document.getElementById(strListItem).style.setProperty("background-color", "#7E7D7D", "");
		}
		else{
			objDivMenu = document.getElementById(arrHiddenMenus[nSpanNumber]);
			objDivMenu.style.left = nLeftPos;
			objTdMenu.style.backgroundColor = "#7E7D7D";
			
			if (window.navigator.appName=="Microsoft Internet Explorer"){
				HideDropDowns(objDivMenu);
			}
		}

		clearTimeout(killMenu);

	}

	function deleteMenu(){
		var objDivMenu;
		
		if (window.navigator.appName=="Netscape"){
			for(i=0;i<arrHiddenMenus.length;i++){
				document.getElementById(arrHiddenMenus[i]).style.setProperty("left", "-210px", "");
			}
		}
		else{
			for(i=0;i<arrHiddenMenus.length;i++){
				objDivMenu = document.getElementById(arrHiddenMenus[i]);
				objDivMenu.style.left = -210;
			}
			
			for (i = 0; i < document.all.length; i++){
				if (document.all[i].tagName == "SELECT"){
					document.all[i].style.visibility = "visible";
				}
			}
		}
	}
	
	function MouseOutMainMenu(strListItem)
	{
		if (window.navigator.appName=="Netscape"){
			document.getElementById(strListItem).style.setProperty("background-color", "#A4A2A2", "");
		}
		else{
			document.getElementById(strListItem).style.backgroundColor = "#A4A2A2";
		}
		setMenuTimeout();
	}

	function holdMenu(){
		clearTimeout(killMenu);
	}
	
	function setMenuTimeout(){
		killMenu = window.setTimeout("deleteMenu()", 300);		
	}
	
	function HideDropDowns(objDivMenu){
		var arrSelects;
		var iCtr;
		var objItem;
		var intDivLeft;
		var intDivTop;
		var intDivRight;
		var intDivBottom;
		var intSelLeft;
		var intSelTop;
		var intSelRight;
		var intSelBottom;

		arrSelects = new Array(); 
		iCtr = 0;
		for (i = 0; i < document.all.length; i++){
			if (document.all[i].tagName == "SELECT"){
				arrSelects[iCtr] = document.all[i];
				iCtr += 1;
			}
		}
	
		objItem = objDivMenu;
		intDivLeft = 0;
		intDivTop = 0;
		while (objItem != null)
		{
			intDivLeft += objItem.offsetLeft;
			intDivTop += objItem.offsetTop;
			objItem = objItem.offsetParent;
		}
		intDivBottom = objDivMenu.offsetHeight + intDivTop;
		intDivRight = objDivMenu.offsetWidth + intDivLeft;
			
		for (i = 0; i < arrSelects.length; i++){
			objItem = arrSelects[i];
			intSelLeft = 0;
			intSelTop = 0;
			while (objItem != null)
			{
				intSelLeft += objItem.offsetLeft;
				intSelTop += objItem.offsetTop;
				objItem = objItem.offsetParent;
			}
			intSelBottom = arrSelects[i].offsetHeight + intSelTop;
			intSelRight = arrSelects[i].offsetWidth + intSelLeft;
			
			if (intSelLeft < intDivRight && intSelRight > intDivLeft && intSelTop < intDivBottom && intSelBottom > intDivTop){
				arrSelects[i].style.visibility = "hidden";
			}
		}
	}
	
	
	
	
	//------------ͼƬµÈ±ÈËõСº¯Êý------------------
	     
        function imgsize(width_size,height_size,id){
		
			if (document.getElementById(id).width>document.getElementById(id).height){
				if ( document.getElementById(id).width>width_size){
					document.getElementById(id).width = width_size}
			}else{
				if ( document.getElementById(id).height>height_size){
					document.getElementById(id).height = height_size}
			
			}	
		
		}