// JavaScript Document
    var okDetect = true;  
	var browser = navigator.appName.toLowerCase();
	if (navigator.userAgent.indexOf("Firefox")!=-1) //ver si UserAgent es FireFox
	  browser = "firefox"

    version=parseInt(navigator.appVersion); // version de browser
    if (navigator.appVersion.indexOf('5.5')>-1){version=5.5}; 
    if (navigator.appVersion.indexOf('6.')>-1){version=6}; 
    if (navigator.userAgent.indexOf('7')>-1){version=7};//para NetScape
    if (navigator.userAgent.indexOf('1.0')>-1){version=1};//para FireFox
    varHeight = window.screen.availHeight;
    varWidth = window.screen.availWidth - 19;
	varInitLeft = (varWidth / 2) - 391; //391 = 782/2
	if (varInitLeft < 0){
	   varInitLeft = 0;
	}
    switch(browser){
	  case 'microsoft internet explorer': document.write ("<style>div#allcontent2{width: 780px;}input.searchimage{height:19px;}</style>");
										  document.write ("<style>div.toollist-design h2{width:152px;}</style>");
										  document.write ('<link href="/design/gcn/stylesheets/ie.css" rel="stylesheet" type="text/css" />');
	  									  break;
	  default:
										document.write ("<style>div#topmenu{width:780px;}div#submenu{width:780px;}</style>");
										document.write ("<style>div#topmenu{width:780px;}div#submenu{width:780px;}</style>");
										//document.write ("<style>div#allcontent{height:1500px;}div#allcontent2{height:2500px;}</style>");
										break;
    }