function showpic(pic,w,h,head)
{
myWin= open("", "","width="+eval(w)+",height="+eval(h)+",noscrollbars");
myWin.document.open();
myWin.document.writeln("\n\n"+head);
myWin.document.writeln("\n\n\n\n");
myWin.document.writeln("![](images/mainprod/bigger/"+pic+".jpg)
\n");
myWin.document.writeln("\n\n");
myWin.document.close();
myWin.creator=self;
}