function xTop(e,iY)
{if(!(e=xGetElementById(e)))return 0;var css=xDef(e.style);if(css&&xStr(e.style.top)){if(xNum(iY))e.style.top=iY+'px';else{iY=parseInt(e.style.top);if(isNaN(iY))iY=xGetComputedStyle(e,'top',1);if(isNaN(iY))iY=0;}}
else if(css&&xDef(e.style.pixelTop)){if(xNum(iY))e.style.pixelTop=iY;else iY=e.style.pixelTop;}
return iY;}