// Detect if browser is Netscape 3 + or IE 4 +.
bName = navigator.appName;
bVer = parseInt(navigator.appVersion);
    if ((bName == "Netscape" && bVer >= 3) || 
        (bName == "Microsoft Internet Explorer" && bVer >= 4)) br = "n3"; 
    else br = "n2";

    if (br== "n3") {           
    img1on = new Image();           
    img1on.src = "images/buttonb01_en.gif"/*tpa=images/buttonb01.gif*/;
	img2on = new Image();           
    img2on.src = "images/buttonb02_en.gif"/*tpa=images/buttonb02.gif*/;
	img3on = new Image();           
    img3on.src = "images/buttonb03_en.gif"/*tpa=images/buttonb03.gif*/;
	img4on = new Image();           
    img4on.src = "images/buttonb04_en.gif"/*tpa=images/buttonb04.gif*/;
	img5on = new Image();           
    img5on.src = "images/buttonb05_en.gif"/*tpa=images/buttonb05.gif*/;
	img6on = new Image();           
    img6on.src = "images/buttonb06_en.gif"/*tpa=images/buttonb06.gif*/;
	img7on = new Image();           
    img7on.src = "images/buttonb07_en.gif"/*tpa=images/buttonb07.gif*/;
	img8on = new Image();           
    img8on.src = "images/buttonb08_en.gif"/*tpa=images/buttonb07.gif*/;
		
    img1off = new Image();           
    img1off.src = "images/buttona01_en.gif"/*tpa=images/buttona01.gif*/; 
	img2off = new Image();           
    img2off.src = "images/buttona02_en.gif"/*tpa=images/buttona02.gif*/;
	img3off = new Image();           
    img3off.src = "images/buttona03_en.gif"/*tpa=images/buttona03.gif*/;
	img4off = new Image();           
    img4off.src = "images/buttona04_en.gif"/*tpa=images/buttona04.gif*/;
	img5off = new Image();           
    img5off.src = "images/buttona05_en.gif"/*tpa=images/buttona05.gif*/;
	img6off = new Image();           
    img6off.src = "images/buttona06_en.gif"/*tpa=images/buttona06.gif*/;
	img7off = new Image();           
    img7off.src = "images/buttona07_en.gif"/*tpa=images/buttona07.gif*/;
	img8off = new Image();           
    img8off.src = "images/buttona08_en.gif"/*tpa=images/buttona07.gif*/;
	}
function imgAct(imgName) {
    if (br == "n3") {
    document[imgName].src = eval(imgName + "on.src");
    }
}

// Function to "deactivate" images.
function imgInact(imgName) {
    if (br == "n3") {
    document[imgName].src = eval(imgName + "off.src");
    }
}

//  -->
function styleon(ename){
// THIS IS THE DEFAULT MOUSE OVER COLOR IF NO COLOR IS SPECIFIED BELOW
	var cColor = "FFFFFF";
	
//	ADD MORE LINES TO THIS CODE IF YOU WANT TO ADD NEW COLORS
	if (ename == "m1") cColor = "#FFFFFF";
	if (ename == "m2") cColor = "#FFFFFF";
	if (ename == "m3") cColor = "#FFFFFF";
	if (ename == "m4") cColor = "#FFFFFF";
	if (ename == "m5") cColor = "#FFFFFF";
	if (ename == "m6") cColor = "#FFFFFF";
	if (ename == "m7") cColor = "#FFFFFF";
	if (ename == "m8") cColor = "#FFFFFF";
	if (ename == "m9") cColor = "#FFFFFF";
	if (ename == "m10") cColor = "#FFFFFF";
	if (ename == "m11") cColor = "#FFFFFF";
	if (ename == "m12") cColor = "#FFFFFF";
	if (ename == "m13") cColor = "#FFFFFF";
	if (ename == "m14") cColor = "#FFFFFF";
	if (ename == "m15") cColor = "#FFFFFF";
	if (ename == "m16") cColor = "#FFFFFF";
	if (ename == "m17") cColor = "#FFFFFF";
	if (ename == "m18") cColor = "#FFFFFF";
	if (ename == "m19") cColor = "#FFFFFF";
	if (ename == "m20") cColor = "#FFFFFF";
	if (ename == "m21") cColor = "#FFFFFF";
	if (ename == "m22") cColor = "#FFFFFF";
	if (ename == "m23") cColor = "#FFFFFF";
	if (ename == "m24") cColor = "#FFFFFF";
	if (ename == "m25") cColor = "#FFFFFF";
	if (ename == "m26") cColor = "#FFFFFF";
	
	if (ename == "m100") cColor = "#FFFFFF";
					
	if(document.all) { 
		eval("document.all." + ename + ".color = '" + cColor + "'");
	}
	if(document.layers) {
		eval("document.ids." + ename + ".color = '" + cColor + "'");
    }
}	
	
function styleoff(ename){
// THIS IS THE DEFAULT MOUSE OFF COLOR IF NO COLOR IS SPECIFIED BELOW
	var cColor = "000000";

//	ADD MORE LINES TO THIS CODE IF YOU WANT TO ADD NEW COLORS
	if (ename == "m1") cColor = "#000000";
	if (ename == "m2") cColor = "#000000";
	if (ename == "m3") cColor = "#000000";
	if (ename == "m4") cColor = "#000000";
	if (ename == "m5") cColor = "#000000";
	if (ename == "m6") cColor = "#000000";
	if (ename == "m7") cColor = "#000000";
	if (ename == "m8") cColor = "#000000";
	if (ename == "m9") cColor = "#000000";
	if (ename == "m10") cColor = "#000000";
	if (ename == "m11") cColor = "#000000";
	if (ename == "m12") cColor = "#000000";
	if (ename == "m13") cColor = "#000000";
	if (ename == "m14") cColor = "#000000";
	if (ename == "m15") cColor = "#000000";
	if (ename == "m16") cColor = "#000000";
	if (ename == "m17") cColor = "#000000";
	if (ename == "m18") cColor = "#000000";
	if (ename == "m19") cColor = "#000000";
	if (ename == "m20") cColor = "#000000";
	if (ename == "m21") cColor = "#000000";
	if (ename == "m22") cColor = "#000000";
	if (ename == "m23") cColor = "#000000";
	if (ename == "m24") cColor = "#000000";
	if (ename == "m25") cColor = "#000000";
	if (ename == "m26") cColor = "#000000";	
	
	if (ename == "m100") cColor = "#FFFFFF";
			
	if(document.all) { 
		eval("document.all." + ename + ".color = '" + cColor + "'");
	}
	if(document.layers) {
		eval("document.ids." + ename + ".color = '" + cColor + "'");
    }
}	
//图片按比例缩放
function DrawImage(ImgD,FitWidth,FitHeight){
      var image=new Image();
      image.src=ImgD.src;
	  if (image.complete) { // 如果图片已经存在于浏览器缓存，直接调用回调函数 
		  callback(image,ImgD,FitWidth,FitHeight); 
		  return; // 直接返回，不用再处理onload事件 
	  } 
	  image.onload = function(){ //图片下载完毕时异步调用callback函数。 
		callback(image,ImgD,FitWidth,FitHeight); // 将callback函数this指针切换为img。 
	  }; 
}

function callback(image,ImgD,FitWidth,FitHeight){
	if(image.width>0 && image.height>0){
          if(image.width/image.height>= FitWidth/FitHeight){
              if(image.width>FitWidth){
                  ImgD.width=FitWidth;
                  ImgD.height=(image.height*FitWidth)/image.width;
              }else{
                  ImgD.width=image.width; 
                 ImgD.height=image.height;
              }
          } else{
              if(image.height>FitHeight){
                  ImgD.height=FitHeight;
                  ImgD.width=(image.width*FitHeight)/image.height;
              }else{
                  ImgD.width=image.width; 
                 ImgD.height=image.height;
              } 
         }
      }
}