function hidden()
{document.body.style.overflow='hidden';}
function unhidden()
{document.body.style.overflow='';}

var maxHeight=480,maxWidth=770;
var inWidth,inHeight;
if( ((navigator.appName=="Netscape")&&(parseInt(navigator.appVersion)<5))||(navigator.appName=="Opera") ){inWidth=innerWidth; inHeight=innerHeight;}
                                                                                      else {inWidth=document.body.offsetWidth; inHeight=document.body.offsetHeight;}

hidden();
if(inHeight<maxHeight) {unhidden();}
if(inWidth<maxWidth) {unhidden();}

function resizeScr(){
if( ((navigator.appName=="Netscape")&&(parseInt(navigator.appVersion)<5))||(navigator.appName=="Opera") ){inWidth=innerWidth; inHeight=innerHeight;}
                                                                                      else {inWidth=document.body.offsetWidth; inHeight=document.body.offsetHeight;}
  
if (navigator.appName=="Microsoft Internet Explorer")
    {hidden();
	 if(inHeight<maxHeight) {unhidden();}
	 if(inWidth<maxWidth) {unhidden();}
	}
	else {location.reload();} 
}

onresize=resizeScr;