function getBrowser()
{
	if(document.all)
	{
		// Browser is Internet Explorer
		sBrowser = 'ie';
	}
	else
	{
		// Browser is FireFox
		sBrowser = 'ff'
	}
	
	return sBrowser;
}

function getBodyWidth()
{
	if(getBrowser() == 'ie')
	{
		iBodyWidth = document.body.scrollWidth;
	}	
	else
	{
		iBodyWidth = document.body.offsetWidth;
	}
	
	return iBodyWidth;
}

function getBodyHeight()
{
    arrayPageSize = getPageSize();
    
    iBodyHeight = arrayPageSize[1];
	
	//alert(iBodyHeight);
	
	return iBodyHeight;
}

function getPageSize(){
	
	var xScroll, yScroll;
	
	if (window.innerHeight && window.scrollMaxY) {	
		xScroll = document.body.scrollWidth;
		yScroll = window.innerHeight + window.scrollMaxY;
	} else if (document.body.scrollHeight > document.body.offsetHeight){ // all but Explorer Mac
		xScroll = document.body.scrollWidth;
		yScroll = document.body.scrollHeight;
	} else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari
		xScroll = document.body.offsetWidth;
		yScroll = document.body.offsetHeight;
	}
	
	var windowWidth, windowHeight;
	if (self.innerHeight) {	// all except Explorer
		windowWidth = self.innerWidth;
		windowHeight = self.innerHeight;
	} else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
		windowWidth = document.documentElement.clientWidth;
		windowHeight = document.documentElement.clientHeight;
	} else if (document.body) { // other Explorers
		windowWidth = document.body.clientWidth;
		windowHeight = document.body.clientHeight;
	}	
	
	// for small pages with total height less then height of the viewport
	if(yScroll < windowHeight){
		pageHeight = windowHeight;
	} else { 
		pageHeight = yScroll;
	}

	// for small pages with total width less then width of the viewport
	if(xScroll < windowWidth){	
		pageWidth = windowWidth;
	} else {
		pageWidth = xScroll;
	}


	arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight) 
	return arrayPageSize;
}

function getViewportWidth()
{
	return self.innerWidth || (document.documentElement.clientWidth || document.body.clientWidth);
}

function getViewportHeight()
{
	return self.innerHeight || (document.documentElement.clientHeight || document.body.clientHeight);
}

function getScrollTop()
{
    aScrollXY = getScrollXY();

	iScrollTop = aScrollXY[1];
	
	return iScrollTop;
}

function setScrollTop(iScrollTop)
{
    window.scrollTo(0,iScrollTop);
}

function getScrollXY() {
  var scrOfX = 0, scrOfY = 0;
  if( typeof( window.pageYOffset ) == 'number' ) {
    //Netscape compliant
    scrOfY = window.pageYOffset;
    scrOfX = window.pageXOffset;
  } else if( document.body && ( document.body.scrollLeft || document.body.scrollTop ) ) {
    //DOM compliant
    scrOfY = document.body.scrollTop;
    scrOfX = document.body.scrollLeft;
  } else if( document.documentElement && ( document.documentElement.scrollLeft || document.documentElement.scrollTop ) ) {
    //IE6 standards compliant mode
    scrOfY = document.documentElement.scrollTop;
    scrOfX = document.documentElement.scrollLeft;
  }
  return [ scrOfX, scrOfY ];
}