(function($){$.fn.fullBg=function(){var bgImg=$(this);bgImg.addClass('fullBg');function resizeImg(){var imgwidth=bgImg.width();var imgheight=bgImg.height();var winwidth=$(window).width();var winheight=$(window).height();var widthratio=winwidth/imgwidth;var heightratio=winheight/imgheight;var widthdiff=heightratio*imgwidth;var heightdiff=widthratio*imgheight;if(heightdiff>winheight){bgImg.css({width:winwidth+'px',height:heightdiff+'px'});}else{bgImg.css({width:widthdiff+'px',height:winheight+'px'});}}
resizeImg();$(window).resize(function(){resizeImg();});};})(jQuery)