// PopUp in centre of browser 
function PopUpWindow(page,name, w, h, attributes){
	var winl = (screen.width - w) / 2;
	var wint = (screen.height - h) / 2;	
	
	winprops = "height=" + h + ",width=" + w + ",top=" + wint + ",left=" + winl + "," + attributes;
	var OpenWin = window.open(page, name, winprops);
}

// pop- specific image files
function PopTBT(page){
	PopUpWindow(page,'TBTpop', 550,356,'scrollbars=1,resizable=1');
}

// pop - for PDF
function PopTBTPDF(page){
	window.open(page,'TBTPDF', 'scrollbars=1,resizable=1,location=0,menubar=0,toolbar=0');//
}