function CheckFileControlValidation(source, arguments)
{
   var File_UploadId= source.attributes["controltovalidate"].nodeValue.replace("txt_FilePath","File_Upload") ;
    var ErrorMsg="";
    
    if( (trim(arguments.Value)=="") && (trim($get(File_UploadId).value)==""))
    {
         arguments.IsValid=false;
    }
    else //check user upload file validation
    
        if($get(File_UploadId).value!="")
        {
            var FileSuffixIndex=$get(File_UploadId).value.lastIndexOf(".");
            var FileName=$get(File_UploadId).value;
            var FileSuffix=FileName.substring(FileSuffixIndex+1,FileName.length);
            
            var allowSuffixId=File_UploadId.replace("File_Upload","hf_AllowSuffix");
            var blockSuffixId=File_UploadId.replace("File_Upload","hf_BlockSuffix");
            
            if($get(blockSuffixId).value!="")
            {
                if($get(blockSuffixId).value.toLowerCase().indexOf("*."+FileSuffix.toLowerCase())>-1)    
                {
                    //source.innerHTML="File Suffix Is Blocked";
                    arguments.IsValid=false;
                    return; 
                }
                    
            }
            
            if($get(allowSuffixId).value!="")
            {
                if($get(allowSuffixId).value.toLowerCase().indexOf("*."+FileSuffix.toLowerCase())==-1)
                {
                    //source.innerHTML="File Suffix Is Not Allowed";
                    arguments.IsValid=false;
                    return;
                }
            }
        }
        
        
}

function trim(str)
   {
     s = str.replace(/^(\s)*/, '');
     s = s.replace(/(\s)*$/, '');
     return s;
   }

function UpdateFileSrc(File_Upload,txt_File,IconUrl)
{
    var Src=trim($get(File_Upload).value);
   
    if(Src!="")
       {
            //when we upload new file we need to mark that the image came from the client and no from the server
            //so in preview we will know how to set the url
            var hf_NewUpload=File_Upload.replace("File_Upload","hf_NewUpload");
            $get(hf_NewUpload).value="true";
            $get(txt_File).value=Src;
            var ImgIcon="ImgIcon"+txt_File;
            var  SuffixIndex = Src.lastIndexOf(".") + 1;
            var FileSuffix=Src.substring(SuffixIndex);
            
            $get(ImgIcon).src=IconUrl+"//"+FileSuffix+".gif";
       }
    
 
}  


//preview
function openFile(senderId,ImageUrl,SiteUrl)
{
   var PageFeatures="scroll:no;dialogHeight: 400px; dialogWidth: 400px; dialogTop: px; dialogLeft: px; edge: Raised; center: Yes; help: No; resizable: yes; status: No;";
       
    var txt_FilePath=senderId.replace("ImgPreview","");
    var Src=$get(txt_FilePath).value;
    if(trim(Src)!="")
    {
        var hf_NewUpload=txt_FilePath.replace("txt_FilePath","hf_NewUpload");
        //if the file is already on the server
        if($get(hf_NewUpload).value=="false")
            {
                Src=ImageUrl+"//"+Src;          
                window.open(Src);
            }
    }
      
}

//open src
function openSrc(Url)
{
     window.open(Url);
}