function Oberwindow(theURL,winName,features,wwidth,wheight){
	resx=screen.height;
	resy=screen.width;
	x=((resy/2)-(wwidth/2))
	y=((resx/2)-(wheight/2))
	texto=features;
	texto+="screenX="+x+",screenY="+y+",width="+wwidth+",height="+wheight+",left="+x+",top="+y
	gates=window.open(theURL,winName,texto);
	gates.focus();
}
function Centerthis(wwidth,wheight){
	resx=screen.height;
	resy=screen.width;
	x=((resy/2)-(wwidth/2))
	y=((resx/2)-(wheight/2))
	this.moveTo(x,y)
}
function obreCredits(){
	window.open('../popup/credits.htm','credits','scrollbars=no,width=300,height=180,top=50,left=150')
}
function obreDeclaracio(){
	window.open('../popup/declaracio.htm','declaracio','scrollbars=no,width=450,height=340,top=50,left=150')
}