$(function(){
	$("html,body").css("overflow","hidden");
	$("body").css("opacity","0");
	$("#page_content").css("opacity","0").find("> ul",this).hide();
	$("#navi").hide();
});
function xcanvas(){
	

	var w_w = screen.availWidth;
	var w_h = screen.availHeight;
	//var w_h = window.innerHeight;
	
////////////////////canvas////////////////////
	var canvas = document.getElementById("bg_canvas");

	if(!canvas || !canvas.getContext){
		return false;
	}
	canvas.setAttribute("width",w_w);
	canvas.setAttribute("height",(w_h+200));
	var ctx = canvas.getContext('2d');
	ctx.beginPath();
	var grad = ctx.createRadialGradient(w_w/2,w_w/4,100,w_w/2,w_w/2,700);

	grad.addColorStop('0','#DA7185');
	grad.addColorStop('0.3','#94384A');
	grad.addColorStop('0.8','#580D1C');
	grad.addColorStop('1','#000');
	ctx.fillStyle = grad;
	ctx.rect(0,0,w_w,w_h);
	ctx.fill();
	
	ctx.beginPath();
	var grad  = ctx.createLinearGradient(0,w_h/2, 0,w_w);
	grad.addColorStop(0,'transparent');
	grad.addColorStop(0.9,'#000000');
	grad.addColorStop(1,'#000000');
	ctx.fillStyle = grad;
	ctx.rect(0,0, w_w,w_w);
	ctx.fill();
////////////////////canvas////////////////////
	

	var all_h = $("#all").height();
	var top_position = (w_h-all_h)/2-30;
	top_position = top_position-80;
	if(top_position > 0){
		$("#all").css("top",top_position);
		$("#footer").css("top",top_position);
		$("h1").css("top",top_position-30);
		$("#site_desc").css("top",top_position-15);
	}else{

	}

	$("#navi").css("opacity","0.6");
	
	$("body").animate({"opacity":"1"},{duration:300});
	
	$("#navi").show('slow').parent().find("#page_content").delay(300).animate({"opacity":"1"},{duration:1000}).find("> ul",this).delay(1100).show('fast');
	
	$("#menu_list").css("opacity","0.9");
	$("#company_content").css("opacity","0.9");
	$("#all").removeClass("shadow").removeClass("rad").addClass("shadow").addClass("rad");
}