function PopWin(url,name,options) {

	var ContextWindow = window.open(url,name,options);

	ContextWindow.opener = this;

	ContextWindow.focus();

}

/* 	for example:

	var ContextWindow = window.open(url,name,'width=800,height=320,resizable=no,scrollbars=no,toolbar=no,status=no'); */







function PopViewpic(url,width,height) {



	/* this is the default width (W) and height (H) of all viewpic popup windows */

	var W = 548;

	var H = 548;



	/* but if the width and/or height have been specified by the caller, use those */

	if(width)

		W = width;

	if(height)

		H = height;



	/* the rest of this is all just to make sure the window doesn't exceed people's screen space */

	var screenHeight = screen.height;

	var screenWidth = screen.width;

	var X = 0;

	var Y = 0;

	

	if (screenWidth < 800)

		W = screenWidth - 40;

	else if (screenWidth > 840)

		X = 40;



	if (screenHeight < 780)

		H = screenHeight - 60;



	/* finally call PopWin with the appropriate values */

	PopWin(url, 'viewpic-window',

		'width='+W+',height='+H+',resizable=yes,scrollbars=yes,toolbar=no,status=no,left='+X+',top='+Y+',screenX='+X+',screenY='+Y+'');



}