var winW,winH;function dajrozmery(){if(typeof(window.innerWidth)=='number'){winW=window.innerWidth;winH=window.innerHeight;}else if(document.documentElement&&(document.documentElement.clientWidth||document.documentElement.clientHeight)){winW=document.documentElement.clientWidth;winH=document.documentElement.clientHeight;}else if(document.body&&(document.body.clientWidth||document.body.clientHeight)){winW=document.body.clientWidth;winH=document.body.clientHeight;}}
function showpict(file,wid,hei){dajrozmery();var scroll=getScrollXY();var ele=document.getElementById('fotka');ele.innerHTML='<img src="'+file+'"></img>';ele.style.top=Math.round((winH-hei)/2)+scroll[1]+'px';ele.style.left=Math.round((winW-wid)/2)+'px';ele.style.visibility='visible';}
function getScrollXY(){var scrOfX=0,scrOfY=0;if(typeof(window.pageYOffset)=='number'){scrOfY=window.pageYOffset;scrOfX=window.pageXOffset;}else if(document.body&&(document.body.scrollLeft||document.body.scrollTop)){scrOfY=document.body.scrollTop;scrOfX=document.body.scrollLeft;}else if(document.documentElement&&(document.documentElement.scrollLeft||document.documentElement.scrollTop)){scrOfY=document.documentElement.scrollTop;scrOfX=document.documentElement.scrollLeft;}
return[scrOfX,scrOfY];}