function getBrowser() {
  var sBrowser = navigator.userAgent;
  if (sBrowser.toLowerCase().indexOf('msie') > -1) return 'ie';
  else if (sBrowser.toLowerCase().indexOf('firefox') > -1) return 'firefox';
  else return 'mozilla';
}

var browser = getBrowser();

function resizeMap(){

switch(browser){



case 'ie':
 document.getElementById("site").style.minHeight  = document.documentElement.clientHeight - 186;
 break;
 case 'mozilla':

 
 if(document.getElementById('site')){
    document.getElementById("site").style.minHeight  = (window.innerHeight - 186) + "px";
 }else {
    alert("not found moz");
 }

 break;
case 'firefox':

    if (document.getElementById('site')) {
        document.getElementById("site").style.minHeight = (window.innerHeight - 186) + "px";
    } else {
        alert("not found ff");
    }
    break;

 
}

}
// JScript File
 
    switch(browser){
case 'ie':  

    document.getElementById("body").onresize = function (){
    resizeMap();
    }

break;
case 'mozilla':

window.onresize=resizeMap;


break;
case 'firefox':

window.onresize=resizeMap;

break;
default:

//document.getElementById("debug").innerHTML += "<b>Browser:</b>" + browser + "<hr>";

break;
    
}