function submitupload(uploadjsppath,inputFileName,inputParameter) 
{
   
   var ext = inputFileName.substring(inputFileName.length-3,inputFileName.length);
   ext = ext.toLowerCase();
   	if((ext != "jpeg")&&(ext != "jpg")&&(ext != "gif")&&(ext != "zip")) 
  		{
    		alert("You selected a ."+ext+" file; please select a .jpg/.gif/.zip file instead!")
    	}
  	else
    	{   
	    	document.uploadForm.action = uploadjsppath+"upload.jsp?"+inputParameter+"&filetype="+ext;
	    	document.uploadForm.submit()
		}
}