function mouse_over (element, src)
{
	element.src = src;
}

function mouse_out (element, src)
{
	element.src = src;
}

function popup (url, target)
{
	var pop = window.open( url,target,"toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=yes, resizable=no, copyhistory=yes, width=400, height=300");
	pop.focus();
}

function popimg (url)
{
	var pop = window.open( url,"image","toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=yes, resizable=no, copyhistory=yes, width=400, height=400");
	pop.focus();
}


function popbbs (url)
{
	var pop = window.open( url,"bbs","toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=yes, resizable=yes, copyhistory=yes, width=900, height=600");
	pop.focus();
}

function popforum (url)
{
	var pop = window.open( url,"forum","toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=yes, resizable=yes, copyhistory=yes, width=900, height=600");
	pop.focus();
}

function popnews (url)
{
	var pop = window.open( url,"news","toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=yes, resizable=yes, copyhistory=yes, width=900, height=600");
	pop.focus();
}

function popsch (url)
{
	var pop = window.open( url,"schedule","toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=yes, resizable=yes, copyhistory=yes, width=400, height=300");
	pop.focus();
}

function popup (url, target, width, height)
{

	if(width == null)
	{
		width = 400 
	}

	if( height == null)
	{
		height = 300 
	}

	var pop = window.open( url,target,"toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=yes, resizable=no, copyhistory=yes, width="+width+", height=" + height);
	pop.focus();
}

var no = 5;
var ns4up = (document.layers) ? 1 : 0;
var ie4up = (document.all) ? 1 : 0;

var dx, xp, yp;
var am, stx, sty;
var i, doc_width = 800, doc_height = 600;
var mouseX = 400 , mouseY = 300 ;

function getMosueXY()
{
	mouseX = event.x;
	mouseY = event.y;
}


function effectSnow(url)
{

	var snowsrc=url;
	
	if (ns4up) 
	{
		doc_width = self.innerWidth;
		doc_height = self.innerHeight;
	} 
	else if (ie4up) 
	{
		doc_width = document.body.clientWidth;
		doc_height = document.body.clientHeight;
	}
	
	document.onmousemove = getMosueXY;
	
	dx = new Array();
	xp = new Array();
	yp = new Array();
	am = new Array();
	stx = new Array();
	sty = new Array();
	
	for (i = 0; i < no; ++ i)
	{
		dx[i] = 0;
		xp[i] = Math.random()*(doc_width-50);
		yp[i] = Math.random()*doc_height;
		am[i] = Math.random()*20;
		stx[i] = 0.02 + Math.random()/10;
		sty[i] = 0.7 + Math.random();
		
		if (ns4up) 
		{
			if (i == 0) 
			{
				document.write("<layer name=\"dot"+ i +"\" left=\"15\" top=\"15\" visibility=\"show\"><a href=\"http://dynamicdrive.com/\"><img src='"+snowsrc+"' border=\"0\"></a></layer>");
			} 
			else 
			{
				document.write("<layer name=\"dot"+ i +"\" left=\"15\" top=\"15\" visibility=\"show\"><img src='"+snowsrc+"' border=\"0\"></layer>");
			}
		} 
		else if (ie4up) 
		{
			if (i == 0) 
			{
				document.write("<div id=\"dot"+ i +"\" style=\"POSITION: absolute; Z-INDEX: "+ i +"; VISIBILITY: visible; TOP: 15px; LEFT: 15px;\"><a href=\"http://dynamicdrive.com\"><img src='"+snowsrc+"' border=\"0\"></a></div>");
			} 
			else 
			{
				document.write("<div id=\"dot"+ i +"\" style=\"POSITION: absolute; Z-INDEX: "+ i +"; VISIBILITY: visible; TOP: 15px; LEFT: 15px;\"><img src='"+snowsrc+"' border=\"0\"></div>");			
			}
		}
	}
	
	
	if (ns4up) 
	{
		snowNS();
	} 
	else if (ie4up) 
	{
		snowIE();
	}

}


function snowNS()
{
	var i;
	
	for (i = 0; i < no; ++ i) 
	{ 
		yp[i] += sty[i];
		
		if (yp[i] > doc_height-50) 
		{
//			xp[i] = Math.random()*(doc_width-am[i]-30);
//			yp[i] = 0;
			xp[i] = mouseX;
			yp[i] = mouseY;		
			stx[i] = 0.02 + Math.random()/10;
			sty[i] = 0.7 + Math.random();
			doc_width = self.innerWidth;
			doc_height = self.innerHeight;
		}
		
		dx[i] += stx[i];
		document.layers["dot"+i].top = yp[i];
		document.layers["dot"+i].left = xp[i] + am[i]*Math.sin(dx[i]);
	}
	setTimeout("snowNS()", 10);
}
	
function snowIE()
{
	var i;
	
	for (i = 0; i < no; ++ i) 
	{ 
		yp[i] += sty[i];
		
		if (yp[i] > doc_height-50) 
		{
//			xp[i] = Math.random()*(doc_width-am[i]-30);
//			yp[i] = 0;
			xp[i] = mouseX;
			yp[i] = mouseY;			
			stx[i] = 0.02 + Math.random()/10;
			sty[i] = 0.7 + Math.random();
			doc_width = document.body.clientWidth;
			doc_height = document.body.clientHeight;
		}
		
		dx[i] += stx[i];

		document.all["dot"+i].style.pixelTop = yp[i];
		document.all["dot"+i].style.pixelLeft = xp[i] + am[i]*Math.sin(dx[i]);
	}
	
	setTimeout("snowIE()", 10);
}