// JavaScript Document

window.onload = chechB;


function checkPage(){
 
    var bkNameLinks =document.getElementById('bkNameLinks');

    if(document.getElementById('heritagePage') != null){
		
      //  bkNameLinks.style.backgroundImage  = "url(images/mainbknavi_heritagePage.png)";
		
    }else if(document.getElementById('Power_Generation') != null){
		
       // bkNameLinks.style.backgroundImage  = "url(images/mainbknavi_heritagePage.png)";
		
    }else{
        bkNameLinks.style.backgroundImage  = "url(images/mainbknavi.png)";
    }



}


function chechB(){
    checkPage();
    imgRollover();
    var topDiv = document.getElementById("mainNaviBKDIV");
    var btmDiv = document.getElementById("index_dock");
    var naviagtion = document.getElementById("naviagtion");

    if (/MSIE (\d+\.\d+);/.test(navigator.userAgent)){ //test for MSIE x.x;
        var ieversion=new Number(RegExp.$1) // capture x.x portion and store as a number

        if (ieversion>=6 ||ieversion>=7 ){

            topDiv.style.left = "-17";
            if(btmDiv != null){
                btmDiv.style.left = "-17";
            }
          if(naviagtion!=null)  naviagtion.style.paddingTop ="4px";
        }
        if(ieversion>=8){
            topDiv.style.left = "0";
            if(btmDiv != null){
                btmDiv.style.left = "0";
            }
           if(naviagtion!=null) naviagtion.style.paddingTop ="24px";
        }

    }else{

        topDiv.style.left = "0";
        if(btmDiv != null){
            btmDiv.style.left = "0";
        }
       
	   if(naviagtion!=null) naviagtion.style.paddingTop ="24px";
    }
}

function imgRollover(){

//    var tr = document.getElementById('mainmanuTR');
//    var allTD = tr.getElementsByTagName("td");
//    // alert(allTD.length)
//    for (i = 0; i < allTD.length; i++) {
//
//        allTD[i].onfocus = overTD(this);
//
//    }

}

function overTD(td){
    var oldImg = td.getElementsByTagName('img')[0];

    var Imgs = oldImg.src.split(".");
    var imgnameover = oldImg.src.substring(0, oldImg.src.lastIndexOf('.'))+"_over."+oldImg.src.substring( oldImg.src.lastIndexOf('.')+1);
    oldImg.src = imgnameover;
    td.getElementsByTagName('div')[1].className = "captDivS";
}

function BtnTD(td){
    var oldImg = td.getElementsByTagName('img')[0];

    var Imgs = oldImg.src.split("_");
    var fst = Imgs[0];
  //  var last = Imgs[1].split('.');
    oldImg.src = fst+".png";
    td.getElementsByTagName('div')[1].className = "captDiv";
//oldImg.src = imgnameover;
}

function gotoP(td){
   
   var page = td.getElementsByTagName('a')[0].href;
   window.location = page;
}

 
 

var currentBkimg ;
var backTD;
var classa;

function extractUrl(input)
{
    // remove quotes and wrapping url()
if(input!=null ||input!=undefined ){
   return input.replace(/"/g,"").replace(/url\(|\)$/ig, "");}else{ return "";}
}

$("document").ready(function (){
    currentBkimg = extractUrl($('#MBTD').css('background-image'));
    backTD = $('#MBTD');
    currentBkimg = currentBkimg.substring(currentBkimg.lastIndexOf('/') + 1)
    //alert(currentBkimg);
    if(document.getElementById('MBTD')!=null){
	classa = document.getElementById('MBTD').className;}else{ classa= "";}
	
	
  //  var heavyImage = new Image();

  //  heavyImage.src = "images/indexImages/_small_/power_main.jpg";
   // heavyImage.src = "images/indexImages/_small_/heritage_mainImg.jpg";
   // heavyImage.src = "images/indexImages/_big_/power_main.jpg";
   // heavyImage.src = "images/indexImages/_big_/heritage_mainImg.jpg";
});


function MainnoverTD(td){

    //alert(currentBkimg);
    // alert($('body').attr('id'));

    var oldImg = td.getElementsByTagName('img')[0];
  //  alert(oldImg.src.substring( oldImg.src.lastIndexOf('.')+1));

    var Imgs = oldImg.src.split(".");
  var imgnameover = oldImg.src.substring(0, oldImg.src.lastIndexOf('.'))+"-hover."+oldImg.src.substring( oldImg.src.lastIndexOf('.')+1);
  //alert(imgnameover);
  oldImg.src = imgnameover;
    //td.getElementsByTagName('div')[1].className = "captDivS";

 
    if($('body').attr('id')){


        //var maintd =  document.getElementById('MBTD');
        var url  = td.getElementsByTagName('a')[0].href.substring(td.getElementsByTagName('a')[0].href.lastIndexOf('/') + 1)
        var selectimg;

        switch(url)
        {
            case "index.php":
                selectimg = 'heritage_mainImg.jpg'
                break;
            case "Power_Generation.php":
                selectimg = 'power_main.jpg'
                break;
	        case "engineering_hardware.php":
                selectimg = 'engineering_hardware.jpg'
                break;
			case "agriculture_division.php":
                selectimg = 'agriculture_division.jpg'
                break;
			 case "travel_leisure_pharmaceuticals.php":
                selectimg = 'travel_leisure_pharmaceuticals.jpg'
                break;	
			 case "business_solutions.php":
                selectimg = 'business_solutions.jpg'
                break;	
			case "home_appliances.php":
                selectimg = 'home_appliances.jpg'
                break;	
			case "services.php":
                selectimg = 'services.jpg'
                break;		
            default:
                selectimg = currentBkimg;
        }

		if(classa!=null){
	 
        if(classa.indexOf('sub')!=-1){

            $('#MBTD').css("background-image", "url(images/indexImages/_small_/"+selectimg+")");

        }else{

            $('#MBTD').css("background-image", "url(images/indexImages/_big_/"+selectimg+")");
        }
}
    }else{
	
		
	
}



}

function onoverTD(td){
    var oldImg = td.getElementsByTagName('img')[0];

    var Imgs = oldImg.src.split("-hover.");
    var fst = Imgs[0];
   // var last = Imgs[1].split('.');
   //alert(fst+'.png');
oldImg.src = fst+".png";
//  alert(fst+".png");
 if(classa!=null){
 if(classa.indexOf('sub')!=-1){

        $('#MBTD').css("background-image", "url(images/indexImages/_small_/"+currentBkimg+")");

    }else{

        $('#MBTD').css("background-image", "url(images/indexImages/_big_/"+currentBkimg+")");
    }
}
}