// -------- local functions and Variables
var mImages = new Array(60);
var bIm;
//var INDEX_FILE = "http://cs.becs.ac.in/index.php";
var BASE_IMAGE_URL = "http://cs.becs.ac.in/images";
var INTERVAL = 3000;
var INTERVAL1 = 1000;
var pathmenushow = 0;
var pathmenuid = '';
var timerID;
var timerID1;

bIm = new Image();
bIm.src = "http://cs.becs.ac.in/images" + "/placeholder.png";

function showthumb(im, no, e) {
        var thumbl = getLayerObj('thumb');
        var thumbImage = getImgObj('placeholder');
        thumbImage.src = im;
        moveLayerTo(thumbl,getX(e) + 50,getY(e) - 10);
        showLayer(thumbl);
}
function hidethumb() {
        var thumbl = getLayerObj('thumb');
        hideLayer(thumbl);
}
//1k DHTML API
// ----- 1. BROWSER DETECTION ----- //

var dyn = (document.all || document.layers || document.getElementById) ? true : false;

var ie = (navigator.appName.indexOf('Microsoft') != -1) ? true : false;
var ie4 = (ie && document.all && !document.getElementById) ? true : false;
var ie5 = (ie && document.getElementById && navigator.userAgent.indexOf('MSIE 6.0') == -1) ? true : false;
var ie6 = (ie && document.getElementById && !ie5) ? true : false;
var ie4Min = (ie4 || ie5 || ie6) ? true : false;
var ie5Min = (ie5 || ie6) ? true : false;
var ie6Min = ie6;

var ns = (navigator.appName.indexOf('Netscape') != -1) ? true : false;
var ns4 = (ns && document.layers) ? true : false;
var ns6 = (ns && document.getElementById) ? true : false;
var ns4Min = (ns4 || ns6) ? true : false;
var ns6Min = ns6;

// ----- 2. CURSOR ----- //

var cursorPageX, cursorPageY;
var cursorWinX, cursorWinY;

// -----  show/hide ----- //
function sE(e){if(e){l?e.visibility='show':e.style.visibility='visible';}}
function hE(e){if(e){l?e.visibility='hide':e.style.visibility='hidden';}}

// ------ Image
function getImgObj(IMGNAME) {
   if (ns4) {
      var tempImgObj = null;
      var tempParentObj = (arguments.length == 1) ? document : arguments[1];
      if (arguments.length == 1 && document.images[IMGNAME] != null) tempImgObj = document.images[IMGNAME];
      else {
         for (var tempLayerLoop in tempParentObj.layers) {
            var tempObj = tempParentObj.layers[tempLayerLoop];
            var tempConstructor = tempObj.constructor + '';
            if (tempConstructor.indexOf('function Layer()') != -1) {
               if (tempObj.document.images[IMGNAME] != null) return tempObj.document.images[IMGNAME];
               else if (tempObj.document.layers.length > 0) tempImgObj = getImgObj(IMGNAME,tempObj);
               }
            }
         }
      return tempImgObj;
      }
   else if (dyn) return document.images[IMGNAME];
}

d=document;l=d.layers;op=navigator.userAgent.indexOf('Opera')!=-1;
function initbdfd() {
	initbd();
	initfd();
}
function initbd() {
	bd = parent.bodypart.document;
}
function initfd() {
	fd = parent.footerpart.document;
}
function initcd() {
	cd = parent.contents.document;
}
function hideCLayers(){
	var i;
	initcd();
	for(i=0;i<cln;i++){
		hE(getLayerObj(clayers[i],cd));
	}
}


function mCE(l,ev) {
	var ex = 0;
	var ey = 0;
	if(ev) {
		ex = eval(getX(ev) + '+' + '4');
		ey = getY(ev);
//		ex = ev.layerX;
//		ey = ev.layerY;
	}
	moveLayerTo(l,45,ey);
	return l;
}
function mE(l,ev) {
	var ex = 0;
	var ey = 0;
	if(ev) {
		ex = eval(getX(ev) + '-' + '100');
		ey = getY(ev);
//		ex = ev.layerX;
//		ey = ev.layerY;
	}
	moveLayerTo(l,ex,0);
	return l;
}
// ------  Layer
function getLayerObj(LAYERID,dtbs) {
//      alert( parent);
//      alert( arguments[1]);
//	initbdfd();

   if(!dtbs) dtbs = document;
//   alert(dtbs);
   if (ie4) return dtbs.all[LAYERID];
   else if (ns4) {
      var tempLayerObj = null;
      //var tempParentObj = (arguments.length == 1) ? document : arguments[1];
      var tempParentObj = dtbs;
      for (var tempLayerLoop in tempParentObj.layers) {
         var tempObj = tempParentObj.layers[tempLayerLoop];
         var tempConstructor = tempObj.constructor + '';
         if (tempConstructor.indexOf('function Layer()') != -1) {
            if (tempLayerLoop == LAYERID) return tempObj;
            else if (tempObj.document.layers.length > 0) tempLayerObj = getLayerObj(LAYERID,tempObj);
            }
         }
      return tempLayerObj;
      }
   else if (dyn) return dtbs.getElementById(LAYERID);
}
function getLayerTop(layer) {if (layer.pageY) return layer.pageY;if (layer.style.top) return parseInt(layer.style.top);return-1;}
function getLayerLeft(layer) {if (layer.pageX) return layer.pageX;if (layer.style.left) return parseInt(layer.style.left);return-1;}
function moveLayerTo(LAYEROBJ,LEFT,TOP) {
   if(LAYEROBJ) {
   if (ns4) {
      if (isBlank(LEFT)) LEFT = getLayerLeft(LAYEROBJ);
      if (isBlank(TOP)) TOP = getLayerTop(LAYEROBJ);
      LAYEROBJ.moveTo(LEFT,TOP);
      }
   else if (dyn) {
      if (!isBlank(LEFT)) LAYEROBJ.style.left = LEFT + 'px';
      if (!isBlank(TOP)) LAYEROBJ.style.top = TOP + 'px';
      }
   }
   return(LAYEROBJ);
}
function slideLayerTo(LAYEROBJ,LEFT,TOP,INCREMENT,FRAMERATE,SLIDEENDFUNC) {
   if (dyn) {
      var tempSlideId = LAYEROBJ.id;
      if (slideLayerObj[tempSlideId] != null) window.clearTimeout(slideLayerObj[tempSlideId].moveTimeout);
      var tempPosX = getLayerLeft(LAYEROBJ);
      var tempPosY = getLayerTop(LAYEROBJ);
      if (isBlank(LEFT)) LEFT = tempPosX;
      if (isBlank(TOP)) TOP = tempPosY;
      slideLayerObj[tempSlideId] = new slideLayerInit(LAYEROBJ,tempPosX,tempPosY,LEFT,TOP,INCREMENT,FRAMERATE,SLIDEENDFUNC);
      slideLayerObj[tempSlideId].slideLayer();
      }
   }
function hideLayer(LAYEROBJ) {
   if (ns4) LAYEROBJ.visibility = 'hide';
   else if (dyn) LAYEROBJ.style.visibility = 'hidden';
   }
function showLayer(LAYEROBJ) {
   if (ns4) LAYEROBJ.visibility = 'show';
   else if (dyn) LAYEROBJ.style.visibility = 'visible';
   }
// ----- 18. LAYER Z-INDEX ----- //

function getLayerZIndex(LAYEROBJ) {
   if (ns4) return LAYEROBJ.zIndex;
   else if (dyn) return LAYEROBJ.style.zIndex;
   }
function setLayerZIndex(LAYEROBJ,ZINDEX) {
   if (ns4) LAYEROBJ.zIndex = ZINDEX;
   else if (dyn) LAYEROBJ.style.zIndex = ZINDEX;
   }
function addLayer(LAYERID,PARENTLAYEROBJ) {
   if (ie4Min) {
      if (isBlank(PARENTLAYEROBJ)) PARENTLAYEROBJ = document.body;
      PARENTLAYEROBJ.insertAdjacentHTML('BeforeEnd','<div id="' + LAYERID + '" style="position:absolute;left:0;top:0;width:1;visibility:hidden;"></div>');
      return (document.all) ? document.all[LAYERID] : document.getElementById(LAYERID);
      }
   else if (ns4) {
      if (isBlank(PARENTLAYEROBJ)) {
         document.layers[LAYERID] = new Layer(0);
         return document.layers[LAYERID];
         }
      else {
         PARENTLAYEROBJ.document.layers[LAYERID] = new Layer(0,PARENTLAYEROBJ);
         return PARENTLAYEROBJ.document.layers[LAYERID];
         }
      }
   else if (ns6) {
      if (isBlank(PARENTLAYEROBJ)) PARENTLAYEROBJ = document.body;
      var tempLayer = document.createElement('div');
      tempLayer.setAttribute('id',LAYERID);
      tempLayer.setAttribute('style','position:absolute;left:0;top:0;width:1;visibility:hidden;');
      PARENTLAYEROBJ.appendChild(tempLayer);
      return document.getElementById(LAYERID);
      }
}
function setLayerSize(LAYEROBJ,WIDTH,HEIGHT) {
   if (ie4) {
      if (!isBlank(WIDTH)) LAYEROBJ.style.pixelWidth = WIDTH;
      if (!isBlank(HEIGHT)) LAYEROBJ.style.pixelHeight = HEIGHT;
      }
   else if (ns4) {
      if (!isBlank(WIDTH)) LAYEROBJ.clip.right = WIDTH;
      if (!isBlank(HEIGHT)) LAYEROBJ.clip.bottom = HEIGHT;
      }
   else if (dyn) {
      if (!isBlank(WIDTH)) LAYEROBJ.style.width = WIDTH + 'px';
      if (!isBlank(HEIGHT)) LAYEROBJ.style.height = HEIGHT + 'px';
      }
}

function getLayerHeight(layerID) {
/*
	LAYEROBJ =  getLayerObj(layerID);

   if (ie4) {
      return (LAYEROBJ.style.pixelHeight);
      }
   else if (ns4) {
      return (LAYEROBJ.clip.bottom);
      }
   else if (dyn) {
      return (LAYEROBJ.style.height);
      }
*/
if(document.getElementById){
	return parseInt(document.getElementById(layerID).offsetHeight);
}else if(document.all){
	return parseInt(document.all[layerID].offsetHeight);
}else if(document.layers){
	return parseInt(document.layers[layerID].clip.height);
}
}
// ----- 12. LAYER HTML ----- //

function setLayerHTML(LAYEROBJ,STR) {
   if (navigator.userAgent.indexOf('MSIE 5.0') && navigator.userAgent.indexOf('Mac') != -1) STR += '\n';
   if (ns4) {
      LAYEROBJ.document.open();
      LAYEROBJ.document.write(STR);
      LAYEROBJ.document.close();
      }
   else if (dyn) LAYEROBJ.innerHTML = STR;
}

function isBlank(STR) {
   if (dyn) {
      if (STR == null) STR = '';
      STR += '';
      STR = STR.replace(/^\s+|\s+$/g,'');
      return (STR == '') ? true : false;
      }
   }

function getX(e) {
  if (dyn) {
      if (ie) {
         cursorWinX = e.clientX - 2;
         cursorPageX = cursorWinX + document.body.scrollLeft;
         }
      else {
         cursorPageX = e.pageX;
         cursorWinX = cursorPageX - window.pageXOffset;
         }
	return (cursorPageX);
  }
}
function getY(e) {
  if (dyn) {
      	if (ie) {
         	cursorWinY = e.clientY - 2;
         	cursorPageY = cursorWinY + document.body.scrollTop;
	} else {
		cursorPageY = e.pageY;
         	cursorWinY = cursorPageY - window.pageYOffset;
	}
	return (cursorPageY);
  }
}

function gE(e,f){if(l){f=(f)?f:self;var V=f.document.layers;if(V[e])return V[e];for(var W=0;W<V.length;)t=gE(e,V[W++]);return t;}if(d.all)return d.all[e];return d.getElementById(e);}
function sZ(e,z){l?e.zIndex=z:e.style.zIndex=z;}
function sX(e,x){l?e.left=x:op?e.style.pixelLeft=x:e.style.left=x;}
function sY(e,y){l?e.top=y:op?e.style.pixelTop=y:e.style.top=y;}
function sW(e,w){l?e.clip.width=w:op?e.style.pixelWidth=w:e.style.width=w;}
function sH(e,h){l?e.clip.height=h:op?e.style.pixelHeight=h:e.style.height=h;}
function sC(e,t,r,b,x){l?(X=e.clip,X.top=t,X.right=r,X.bottom=b,X.left=x):e.style.clip='rect('+t+' '+r+' '+b+' '+x+')';}
function wH(e,h){if(l){Y=e.document;Y.open();Y.write(h);Y.close();}else if(e.innerHTML)e.innerHTML=h;}
function goon(action) {
	clearTimeout(timerID);
	if (action == 0) {
		i = 0;
	} else if (action == 2) {
		i = $n - 1;
	} else if (action == -1 ) {
		i = i - 1;
	} else {
		i = i + 1;
	}
	if (i >= _n ) i = 0;
	if (i < 0 ) i = 0;
	document.images['__galleryImg'].src = mImages[i].src;
	timerID=setTimeout('goon(1)', INTERVAL );
}
function openBesusPopup(id) {
	url = "http://cs.becs.ac.in/index.php" + '?show=2&boid=' + id;
        w = openCenteredOnOpenerWindow(url, '__besuspopup', 600, 400, '', true, 'resizable=yes', 'main');
}
function openBesusPopupURL(url,wname) {
        w = openCenteredOnOpenerWindow(url, wname, 600, 400, '', true, 'resizable=yes', 'main');
}

function pathmenushowaction( pathmenunewid, moption, e, place) {
	window.status='';
	if (moption == 1) {
//		alert(getLayerHeight(pathmenunewid));
		/* parentlink is entered (onmouseover)*/
		if (pathmenushow == 1 || pathmenushow == 2) {
			/* Hide the old menu */
			hE(getLayerObj(pathmenuid));
		} 
		/* Show the new menu */
		pathmenushow = 1;
		pathmenuid = pathmenunewid;
		if (place == 1) {
			sE(moveLayerTo(getLayerObj(pathmenunewid),getX(e), getY(e) + 8));
		} else if (place == 2) {
			sE(moveLayerTo(getLayerObj(pathmenunewid),getX(e), getY(e) - 8 - getLayerHeight(pathmenunewid)));
		}
	} else if (moption == 2) {
		/* parentlink is exited (onmouseout)*/
		/* Hide it after 3 seconds if not its zone is entered */
		timerID1=setTimeout('pathmenushowaction(\'\',5,null,1)', INTERVAL1 );
		pathmenushow = 2; /* Hide the presently shown kidmenu */
	} else if (moption == 3) {
		/* kidzone is entered (onmouseover)*/
		/* Make the zone viewed until exited */
		pathmenushow = 1; /* keep it visible */
	} else if (moption == 4) {
		/* kidzone is exited (onmouseout)*/
		/* Hide it after 3 seconds if not the zone is entered again */
		timerID1=setTimeout('pathmenushowaction(\'\',5,null,1)', INTERVAL1 );
		pathmenushow = 2; /* Hide the presently shown kidmenu */
	} else if (moption == 5) {
		/* kidzone is exited (onmouseout)*/
		/* Hide it after 3 seconds if not the zone is entered again */
		if(pathmenushow == 2) {
			hE(getLayerObj(pathmenuid));
		}
	}
}