function window800(url){
               window.open(url,'_blank','location=no,scrollbars=yes,toolbar=no,width=800,height=600');                          
    }
 function window640(url){
               window.open(url,'_blank','location=no,scrollbars=yes,toolbar=no,width=640,height=480')
	                     }
 
     function window480(url){
               window.open(url,'_blank','location=no,scrollbars=yes,toolbar=no,width=480,height=320');                           
                        } 
			
			
	  function window320(url){
               window.open(url,'_blank','location=no,scrollbars=yes,toolbar=no,width=320,height=320');                           
                        } 
                         function windowM(url){
               window.open(url,'_blank','location=no,scrollbars=yes,toolbar=no,width=250,height=350');                           
                        } 
			
			   function windowX(url){
               window.open(url,'_blank','location=no,scrollbars=yes,toolbar=no,width=400,height=500');
                                }