function calculateX(aw) {
    
        var x = 0;
	var diff = 0;
	if (aw >= 1330) {
	    x = 335;
	}
	else if (aw >= 1280) {
	    x = 135;
	}
	else if (aw >= 1152) {
	    x = 135-((1280-aw)/2);
	}
	else if (aw >= 1024) {
	    x = 71-((1152-aw)/2);
	}
	else {
	    x = 7-((1024-aw)/2);
	}

	return x;
}