function setImgSize(img,width,height){
    var MaxWidth=width;//设置图片宽度界限
    var MaxHeight=height;//设置图片高度界限
    var HeightWidth=img.offsetHeight/img.offsetWidth;//设置高宽比
    var WidthHeight=img.offsetWidth/img.offsetHeight;//设置宽高比
    if(img.offsetWidth>MaxWidth){
        img.width=MaxWidth;
        img.height=MaxWidth*HeightWidth;
    }
    if(img.offsetHeight>MaxHeight){
        img.height=MaxHeight;
        img.width=MaxHeight*WidthHeight;
    }
}

// JavaScript Document
function playswf(sFile,sWidth,sHeight){
	document.write('<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=8,0,0,0" width="'+ sWidth +'" height="'+ sHeight +'">  ');
	document.write('<param name="movie" value="'+ sFile +'">');
	document.write('<param name="quality" value="high">');
	document.write('<param name="wmode" value="transparent">');
	document.write('<embed src="'+ sFile +'" wmode="transparent" quality="high" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash" width="'+ sWidth +'" height="'+ sHeight +'"></embed>  ');
	document.write('</object>');
}

  function search_btn()
  {
     form_search.submit();
  }

/*
function mainmenu(){
$("#nav ul").css({display: "none"}); // Opera Fix
$("#nav li").hover(function(){
	$(this).find('ul:first').css({visibility: "visible",display: "none"}).show(400);
	},function(){
	$(this).find('ul:first').css({visibility: "hidden"});
	});
}
*/

function menuFix() {
 var sfEls = document.getElementById("nav").getElementsByTagName("li");
 for (var i=0; i<sfEls.length; i++) {
  sfEls[i].onmouseover=function() {
  this.className+=(this.className.length>0? " ": "") + "sfhover";
  }
  sfEls[i].onMouseDown=function() {
  this.className+=(this.className.length>0? " ": "") + "sfhover";
  }
  sfEls[i].onMouseUp=function() {
  this.className+=(this.className.length>0? " ": "") + "sfhover";
  }
  sfEls[i].onmouseout=function() {
  this.className=this.className.replace(new RegExp("( ?|^)sfhover\\b"), 
"");
  }
 }
}



$(document).ready(function(){ menuFix(); });