$(document).ready(function(){
var scnWid,scnHei;
	if (self.innerHeight) // all except Explorer
	{
		scnWid = self.innerWidth;
		scnHei = self.innerHeight;
	}
	else if (document.documentElement && document.documentElement.clientHeight)
		// Explorer 6 Strict Mode
	{
		scnWid = document.documentElement.clientWidth;
		scnHei = document.documentElement.clientHeight;
	}
	else if (document.body) // other Explorers
	{
		scnWid = document.body.clientWidth;
		scnHei = document.body.clientHeight;
	}
	if(scnWid<=986){
        $('.bg_bottom_left').css('width',986);
        $('.bg_bottom_right').css('width',986);
        $('.bg_top_left').css('width',986);
        $('.bg_top_right').css('width',986);
	}

});

$(window).resize(function(){
  var scnWid,scnHei;
	if (self.innerHeight) // all except Explorer
	{
		scnWid = self.innerWidth;
		scnHei = self.innerHeight;
	}
	else if (document.documentElement && document.documentElement.clientHeight)
		// Explorer 6 Strict Mode
	{
		scnWid = document.documentElement.clientWidth;
		scnHei = document.documentElement.clientHeight;
	}
	else if (document.body) // other Explorers
	{
		scnWid = document.body.clientWidth;
		scnHei = document.body.clientHeight;
	}
	if(scnWid<=986){
        $('.bg_bottom_left').css('width',986);
        $('.bg_bottom_right').css('width',986);
        $('.bg_top_left').css('width',986);
        $('.bg_top_right').css('width',986);
	}else{
        $('.bg_bottom_left').css('width','100%');
        $('.bg_bottom_right').css('width','100%');
        $('.bg_top_left').css('width','100%');
        $('.bg_top_right').css('width','100%');
	}
});