/***********************************
* Copyright 2001 PRISMA 2.0 S.r.l. *
************************************/

// global variable referencing the chat window
var objChat=null;
var chatUrl="http://213.140.1.183/chat/EBTN/chatEBTN.html";

function openWCC(id_user,id_tutor,proxy){
	var dx=261;
	var dy=470;
	var borderx=14;
	var bordery=31;
	var px=(top.window.screen.width - dx-borderx)/2;
	var py=(top.window.screen.height - dy-bordery)/2;
	if (py<16) py=py*2-32;		//barra di windows
	if (py<0) py=0;
	if (px<0) px=0;
	var strUrl;
	strUrl=chatUrl+"?proxy=" + proxy + "&amp;id_user=S" + id_user + "&amp;id_tutor=" + id_tutor;
	var opt='height='+dy+',width='+dx+',resizable=yes,scrollbars=yes,screenX='+px+',screenY='+py+', top='+py+', left='+px;
	window.open(strUrl, "_blank", opt);
}
function openTutorChat(id_user,id_tutor){
	var dx=780;
	var dy=580;
	var borderx=14;
	var bordery=31;
	var px=(top.window.screen.width - dx-borderx)/2;
	var py=(top.window.screen.height - dy-bordery)/2;
	if (py<16) py=py*2-32;		//barra di windows
	if (py<0) py=0;
	if (px<0) px=0;
	var strUrl;
	strUrl=chatUrl+"?id_user=S" + id_user + "&amp;id_tutor=" + id_tutor;
	var opt='height='+dy+',width='+dx+',resizable=yes,scrollbars=yes,screenX='+px+',screenY='+py+', top='+py+', left='+px;
	window.open(strUrl, "_blank", opt);
}

/*
function openClassroomChat(id_user,id_site,id_room,user_ref){
	var dx=702;
	var dy=482;
	var borderx=14;
	var bordery=31;
	var px=(top.window.screen.width - dx-borderx)/2;
	var py=(top.window.screen.height - dy-bordery)/2;
	if (py<16) py=py*2-32;		//barra di windows
	if (py<0) py=0;
	if (px<0) px=0;
	var strUrl;
	var user_Temp = "";
	var i = 0;
	//@@@  CLEAN + 			ID_USER parameter
		while(id_user.indexOf("+", i)!=-1){
		  user_Temp  += id_user.substring(i, id_user.indexOf("+", i))+"_";
		  i = id_user.indexOf("+", i);
		  i++;
		 }
	 	id_user = user_Temp  + id_user.substring(i, id_user.length);
 	//@@@@@
	//@@@  CLEAN + 			USER_REF parameter
		user_Temp = "";
		i = 0;
		while(user_ref.indexOf("+", i)!=-1){
		  user_Temp  += user_ref.substring(i, user_ref.indexOf("+", i))+"_";
		  i = user_ref.indexOf("+", i);
		  i++;
		 }
	 	user_ref = user_Temp  + user_ref.substring(i, user_ref.length);
 	//@@@@@

	strUrl=chatUrl+"?id_user=S" + id_user + "&amp;id_site=" + id_site + "&amp;id_room=" + id_room + "&amp;user_ref=" + user_ref;
	var opt='height='+dy+',width='+dx+',resizable=yes,scrollbars=yes,screenX='+px+',screenY='+py+', top='+py+', left='+px;
	if (objChat==null || objChat.closed){
		objChat = window.open(strUrl, "chat", opt);
	}else{
		objChat.focus();
	}
}

*/
function openClassroomChats(){
	var dx=702;
	var dy=482;
	var borderx=14;
	var bordery=31;
	var px=(top.window.screen.width - dx-borderx)/2;
	var py=(top.window.screen.height - dy-bordery)/2;
	if (py<16) py=py*2-32;		//barra di windows
	if (py<0) py=0;
	if (px<0) px=0;
	var strUrl;
	var user_Temp = "";


	strUrl="chkCRoom.jsp?" + encodeURIComponent(chatUrl);
	var opt='height='+dy+',width='+dx+',resizable=yes,scrollbars=yes,screenX='+px+',screenY='+py+', top='+py+', left='+px;
	if (objChat==null || objChat.closed){
		objChat = window.open(strUrl, "chat",opt);
	}else{
		objChat.focus();
	}
}