var maxsize = 575;

function resizeimg() 
{ 
   if (document.getElementsByTagName) 
   { 
	  for (i=0; i<document.getElementsByTagName('img').length; i++) 
	  { 
		 im = document.getElementsByTagName('img')[i]; 
		 if (im.width > maxsize) 
		 {
			im.style.width = maxsize+'px'; 
			eval("pop" + String(i) + " = new Function(\"pop = window.open('" + im.src + " ','fullscale','width=1024,height=784,scrollbars=1,resizable=1'); pop.focus();\")"); 
			eval("im.onclick = pop" + String(i) + ";"); 
			if (document.all) im.style.cursor = 'hand'; 
			if (!document.all) im.style.cursor = 'pointer'; 
			im.title = 'Dale click a la imagen para verla maximizada'; 
		 } 
	  } 
   } 
}