var saveWidth=0;var saveHeight=0;function scaleImg(what)
{var maxWidth=500;var maxHeight=400;var ratio=1;if(what.width>maxWidth||what.height>maxHeight)
{if((maxHeight/what.height)<=(maxWidth/what.width))
{saveWidth=what.width;saveHeight=what.height;ratio=what.width/what.height;what.height=maxHeight;what.width=maxHeight*ratio;what.style.cursor="pointer";}
else
{saveWidth=what.width;saveHeight=what.height;ratio=what.height/what.width;what.height=maxWidth*ratio;what.width=maxWidth;}}
else if(saveWidth>maxWidth||saveHeight>maxHeight)
{what.width=saveWidth;what.height=saveHeight;what.style.cursor="pointer";}}