/*按比例生成缩略图*/
function DrawImage(ImgD,W,H){ 
  var flag=false; 
  var image=new Image(); 
  image.src=ImgD.src; 
  if(image.width>0 && image.height>0){ 
    flag=true; 
    if(image.width/image.height>= W/H){ 
      if(image.width>W){
        ImgD.width=W; 
        ImgD.height=(image.height*H)/image.width; 
      }
	  else{ 
        ImgD.width=image.width;
        ImgD.height=image.height; 
      } 
      ImgD.alt= ""; 
    } 
    else{ 
      if(image.height>H){
        ImgD.height=H; 
        ImgD.width=(image.width*W)/image.height; 
      }
	  else{ 
        ImgD.width=image.width;
        ImgD.height=image.height; 
      } 
      ImgD.alt=""; 
    } 
  }
}
/*绑定产品编号*/
function BoundNo(){
   var xmlhttp;
   var SortID;
   var Choose;
   Choose=document.getElementById("ProductName");
   SortID=Choose.options[Choose.selectedIndex].title;
   try
   {
     xmhhttp=new ActiveXObjec("Msxml2.XMLHTTP");
	}
	catch (e)
	{
	   try{
	     xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
		 }
	   catch (e){
	         try{
			     xmlhttp=new XMLHttpRequest();
				 }
			catch (e){}
		}
	}
	
	xmlhttp.onreadystatechange=function()
	{
	 if(4==xmlhttp.readyState)
	 {
	   if(200==xmlhttp.status)
	   {	   
	     ProductNo=xmlhttp.responseText;
		 show(ProductNo); 		 
		}	
		else
		{
		alert(xmlhttp.status);
		}
	}
 }
 	var url="ShowNo.asp?SortID="+SortID;
	xmlhttp.open("get",url);
	xmlhttp.send(null);	
	}
function show(text)
{
	document.getElementById("ProductNo").value=text;
}