window.size = function(){
    var w = 0;
    var h = 0;
    //IE
    if(!window.innerWidth){
        //strict mode
        if(!(document.documentElement.clientWidth == 0)){
	    w = document.documentElement.clientWidth;
	    h = document.documentElement.clientHeight;}
	//quirks mode
	else{
	    w = document.body.clientWidth;
	    h = document.body.clientHeight;}}
    //w3c
    else{
        w = window.innerWidth;
        h = window.innerHeight;}
    var size=["height", "width"];
    size["height"]=h;
    size["width"]=w;
//    var size[0] = w;
//    var size[1] = h;
//    return {width:w,height:h};
//    return [w,h];
    return size;
}

window.center = function()
{
    var hWnd = (arguments[0] != null) ? arguments[0] : {width:0,height:0};
    var _x = 0;
    var _y = 0;
    var offsetX = 0;
    var offsetY = 0;
    //IE
    if(!window.pageYOffset)
    {
        //strict mode
        if(!(document.documentElement.scrollTop == 0))
        {
	    offsetY = document.documentElement.scrollTop;
	    offsetX = document.documentElement.scrollLeft;
	}
        //quirks mode
        else
        {
	    offsetY = document.body.scrollTop;
	    offsetX = document.body.scrollLeft;
	}
    }
    //w3c
    else
    {
        offsetX = window.pageXOffset;
	offsetY = window.pageYOffset;
    }
    _x = ((this.size().width-hWnd.width)/2)+offsetX;
    _y = ((this.size().height-hWnd.height)/2)+offsetY;
    return{x:_x,y:_y};
}