d = document;

var w = 0;
var h = 0;

var frameW = 0;
var frameH = 0;

d.status = d.title;

function popWin( url, name, width, height )
{
	var t = ( screen.height - height ) / 2;
	var l = ( screen.width - width ) / 2;
	
	window.open( url, name, 'width='+width+',height='+height+',top='+t+',left='+l+',location=0,status=0,scrollbars=0,toolbar=0,resizeable=no,noresize');
}

function popScroll( url, name, width, height )
{
	var t = ( screen.height - height ) / 2;
	var l = ( screen.width - width ) / 2;
	
	window.open( url, name, 'width='+width+',height='+height+',top='+t+',left='+l+',location=0,status=0,scrollbars=1,toolbar=0,resizeable=no,noresize');
}

function getObject(name){
	if(document.getElementById) return document.getElementById(name);
	if(document.all) return document.all[name];
	if(document.layers) return this.findLayer(name);
};

function getStyle(name){
	var el = this.getObject(name);
	return document.layers ? el : el.style;
};

function setFrame(){
	if (self.innerWidth)
	{
		frameW = self.innerWidth;
		frameH = self.innerHeight;
	}
	else if (document.documentElement && document.documentElement.clientWidth)
	{
		frameW = document.documentElement.clientWidth;
		frameH = document.documentElement.clientHeight;
	}
	else if (document.body)
	{
		frameW = document.body.clientWidth;
		frameH = document.body.clientHeight;
	}
};

function sizeMain()
{
	var argW = arguments[0];
	var argH = arguments[1];

	var mainW = 0;
	var mainH = 0;
	var main = getStyle('main');
	
	scroll(0,0);
	setFrame();

	if(argW) w = argW; // width
	if(argH) h = argH; // height

	mainW = w;
	mainH = h;

	if(mainW<frameW) mainW = frameW;
	if(mainH<frameH) mainH = frameH;

	if(navigator.appName.indexOf("Microsoft")==-1){
		if(mainH>frameH) mainW = mainW - getScrollerWidth();
		if(mainW>frameW) mainH = mainH - getScrollerWidth();
	}
	
	main.width = mainW;
	main.height = mainH;
}

function getScrollerWidth() 
{
    var scr = null;
    var inn = null;
    var wNoScroll = 0;
    var wScroll = 0;

    scr = document.createElement('div');
    scr.style.position = 'absolute';
    scr.style.top = '-1000px';
    scr.style.left = '-1000px';
    scr.style.width = '100px';
    scr.style.height = '50px';
    
    scr.style.overflow = 'hidden';

    inn = document.createElement('div');
    inn.style.width = '100%';
    inn.style.height = '200px';

    scr.appendChild(inn);
    
    document.body.appendChild(scr);

    wNoScroll = inn.offsetWidth;
    
    scr.style.overflow = 'auto';
    
    wScroll = inn.offsetWidth;

    document.body.removeChild(
        document.body.lastChild);

    return (wNoScroll - wScroll);
}

function getScrollXY() 
{
	var scrOfX = 0, scrOfY = 0;
	
	if( typeof( window.pageYOffset ) == 'number' ) 
	{
		scrOfY = window.pageYOffset;
		scrOfX = window.pageXOffset;
	} 
	else if( document.body && ( document.body.scrollLeft || document.body.scrollTop ) ) 
	{
		scrOfY = document.body.scrollTop;
		scrOfX = document.body.scrollLeft;
	}
	else if( document.documentElement && ( document.documentElement.scrollLeft || document.documentElement.scrollTop ) ) 
	{

		scrOfY = document.documentElement.scrollTop;
		scrOfX = document.documentElement.scrollLeft;
	}
	
	return [ scrOfX, scrOfY ];
}

window.onmousewheel = document.onmousewheel = function()
{
	this.focus();
//	window.scroll(getScrollXY()[0], getScrollXY()[1] + (-event.wheelDelta))
}

function scrollUp()
{
	var i = getScrollXY()[1] - 10;
	scroll(0,i);
}

function scrollDown()
{
	var i = getScrollXY()[1] + 10;
	scroll(0,i);
}

function scrollPageUp()
{
	var i = getScrollXY()[1] - 50;
	scroll(0,i);
}

function scrollPageDown()
{
	var i = getScrollXY()[1] + 50;
	scroll(0,i);
}

function scrollHome()
{
	scroll(0,0);
}

function scrollEnd()
{
	scroll(0,main.offsetHeight);
}