function centerWindow(url,name)
		{
		if (document.all) {var xMax = screen.width, yMax = screen.height} 
		else if (document.layers) {var xMax = window.outerWidth, yMax = window.outerHeight} 
		else {var xMax = 640, yMax=480}; var xOffset = (xMax - 200)/2, yOffset = (yMax - 200)/2; window.open(url,name,'width=300,height=240,scrollbars=1,screenX='+xOffset+',screenY='+yOffset+',top='+yOffset+',left='+xOffset+'');
	}

	function centerWindowSize(url,name,chosenWidth, chosenHeight)
		{
		if (document.all) { 
			var xMax = screen.width, yMax = screen.height
		}else if (document.layers) {
				var xMax = window.outerWidth, yMax = window.outerHeight
			}else {var xMax = 640, yMax=480;}
		
		var xOffset = (xMax - chosenWidth)/2, yOffset = (yMax - chosenHeight)/2; 
		if(chosenWidth>xMax){chosenWidth=xMax-30;}
		if(chosenHeight>yMax){chosenHeight=yMax-30;}
		window.open(url,name,'width='+chosenWidth+',height='+chosenHeight+',resizable=1,scrollbars=1,screenX='+xOffset+',screenY='+yOffset+',top='+yOffset+',left='+xOffset);
	}
		
	function otherlink(linkname){
	  //alert(linkname);
		opener.location.href = linkname;
		self.close();
	}
	
	function closewin(){
		self.close();
	}