function newSize(ImgTag,FitWidth,FitHeight)
{var image=new Image();image.src=ImgTag.src;if(image.width>0&&image.height>0){if(image.width/image.height>=FitWidth/FitHeight){if(image.width>FitWidth){ImgTag.width=FitWidth;ImgTag.height=(image.height*FitWidth)/image.width;}
else{ImgTag.width=image.width;ImgTag.height=image.height;}}
else{if(image.height>FitHeight){ImgTag.height=FitHeight;ImgTag.width=(image.width*FitHeight)/image.height;}
else{ImgTag.width=image.width;ImgTag.height=image.height;}}}}