// JavaScript Document
function SimpleSwap(el,which){
  el.src=el.getAttribute(which || "origsrc");
}

function SimpleSwapSetup(){
  var x = document.getElementsByTagName("img");
  for (var i=0;i<x.length;i++){
    var oversrc = x[i].getAttribute("oversrc");
    if (!oversrc) continue;
      
    // preload image
    // comment the next two lines to disable image pre-loading
    x[i].oversrc_img = new Image();
    x[i].oversrc_img.src=oversrc;
    // set event handlers
    x[i].onmouseover = new Function("SimpleSwap(this,'oversrc');");
    x[i].onmouseout = new Function("SimpleSwap(this);");
    // save original src
    x[i].setAttribute("origsrc",x[i].src);
  }
}

var PreSimpleSwapOnload =(window.onload)? window.onload : function(){};
window.onload = function(){PreSimpleSwapOnload(); SimpleSwapSetup();}

function tabs(i,n) {
  var img_src = "images/buttons/";
  for (var j = 0; j < n; j ++) {
	if(n == 3 && j == 2) j = 3;
    if (j == i) {
	   document.getElementById('container'+j).style.display = "";
	   if(i == 1) document.getElementById('container'+j).innerHTML = document.getElementById('container'+j).innerHTML;
	   document.getElementById('pane'+j).src = img_src+'btn_'+i+'_over.gif';
	} else {
	   document.getElementById('container'+j).style.display = "none";
	   document.getElementById('pane'+j).src = img_src+'btn_'+j+'.gif';
	}
  }
}


function frmVal(name,val,str){
	if(val == 0){
		if(document.getElementById(name).value == str){
			document.getElementById(name).value = "";
		}
	} else if(val == 1){
		if(document.getElementById(name).value == ""){
			document.getElementById(name).value = str;
		}
	}
}

function echeck(str){ //Check email address
	var at="@"
	var dot="."
	var lat=str.indexOf(at)
	var lstr=str.length
	var ldot=str.indexOf(dot)
	if (str.indexOf(at)==-1){
	   alert("Invalid E-mail ID")
	   return false
	}
	if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
	   alert("Invalid E-mail ID")
	   return false
	}
	if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
	    alert("Invalid E-mail ID")
	    return false
	}
	 if (str.indexOf(at,(lat+1))!=-1){
	    alert("Invalid E-mail ID")
	    return false
	 }
	 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
	    alert("Invalid E-mail ID")
	    return false
	 }
	 if (str.indexOf(dot,(lat+2))==-1){
	    alert("Invalid E-mail ID")
	    return false
	 }
	 if (str.indexOf(" ")!=-1){
	    alert("Invalid E-mail ID")
	    return false
	 }
 	return true					
}
function checkfrm(){
	var fname  = document.interestFrm.fname;
	var lname  = document.interestFrm.lname;
	var email  = document.interestFrm.email;
	var state  = document.interestFrm.state;
	var option = new Array();
	var j = 0;
	for(i=0; i<=4; i++){
		box = eval("document.interestFrm.option" + i); 
		if(box.checked == true) {			
			option[j] = document.getElementById('option'+i).value;
			j++;
		}
	}
	if((fname.value=="")||(fname.value==null)){
		alert("Please enter your first name!");
		fname.focus();
		return false
	}else if ((lname.value==null)||(lname.value=="")){
		alert("Please enter your last name!");
		lname.focus()
		return false
	}else if ((state.value==0)||(state.value==null)){
		alert("Please enter a state!");
		state.focus()
		return false
	}else if ((email.value==null)||(email.value=="")){
		alert("Please enter your E-mail ID!");
		email.focus()
		return false
	}else if(echeck(email.value)==false){
		email.value="";
		email.focus();
		return false
	}
	document.interestFrm.idp.value = option;
	return true
}

function checkfrm2(){
	var name  = document.mailForm.name;
	var email  = document.mailForm.from;
	var to  = document.mailForm.to;
	if((name.value=="")||(name.value==null)){
		alert("Please enter your name!");
		name.focus();
		return false
	}else if ((email.value==null)||(email.value=="")){
		alert("Please enter your E-mail ID!");
		email.focus()
		return false
	}else if(echeck(email.value)==false){
		email.value="";
		email.focus();
		return false
	}else if ((to.value==null)||(to.value=="")){
		alert("Please enter sending E-mail ID!");
		to.focus()
		return false
	}else if(echeck(to.value)==false){
		to.value="";
		to.focus();
		return false
	}
	return true
}