function OpenImage(imagename,namewin,imgwidth,imgheight){
var img=new Image();
img.hspace=0;
img.vspace=0;
img.src=imagename;
ww=imgwidth;
wh=imgheight;
newWindow=window.open("","new","WIDTH="+(ww+2)+" TOP="+(Math.round(window.screen.availheight/2-wh/2))+" LEFT="+(Math.round(window.screen.availWidth/2-ww/2))+" HEIGHT="+(wh+2));
newWindow.document.write('');
newWindow.document.write('');
newWindow.document.write(''+namewin+'');
newWindow.document.write('');
newWindow.document.write('');
newWindow.document.write('');
newWindow.focus();
};