function echeck(str) {
		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 regis(){
	if(document.getElementById("uname").value==""){
		document.getElementById("uname").focus();
		alert("Please Enter Username");
		return false;
	}
	if (document.getElementById("male").checked==0 && document.getElementById("female").checked==0 ){
	alert ("Please select gender");	
	return false;
	}
	var emailID=document.register.txtEmail
	
	if ((emailID.value==null)||(emailID.value=="")){
		alert("Please Enter your Email ID")
		emailID.focus()
		return false
	}
	if (echeck(emailID.value)==false){
		emailID.value=""
		emailID.focus()
		return false
	} 
	
	var emailIDone=document.register.txtEmailone
	
	if ((emailIDone.value==null)||(emailIDone.value=="")){
		alert("Please Enter your Email ID again")
		emailIDone.focus()
		return false
	}
	if (echeck(emailIDone.value)==false){
		emailIDone.value=""
		emailIDone.focus()
		return false
	} 
	var emailIDone=document.register.txtEmailone
	var emailID=document.register.txtEmail
	
	if(emailIDone.value != emailID.value){
		alert("both Email Id not matched write again")
		emailIDone.value=""
		emailIDone.focus()
		return false		
	}	
	if(document.getElementById("passone").value==""){
		document.getElementById("passone").focus();
		alert("Please Select your password");
		return false;
	}
	if(document.getElementById("passone").value.length < 6){		
		alert("Please Select minimum 6 cherector");
		return false;
	}
	if(document.getElementById("passtwo").value==""){
		document.getElementById("passtwo").focus();
		alert("Please write your password again");
		return false;
	}
	if(document.getElementById("passtwo").value != document.getElementById("passone").value){
		document.getElementById("passtwo").focus();
		alert("both passwords not matched write again");
		return false;
	}
	
	if(document.getElementById("country").value=="Select"){
		document.getElementById("country").focus();
		alert("Please Select your country");
		return false;
	}
	if(document.getElementById("country").value==""){
		document.getElementById("country").focus();
		alert("Please Select your country");
		return false;
	}
	if(document.getElementById("security_code").value==""){
		document.getElementById("security_code").focus();
		alert("Please Enter the code shown in image");
		return false;
	}
}

function logi(){
	
	if(document.getElementById("usname").value==""){
		document.getElementById("usname").focus();
		alert("Please Enter User Name");
		return false;
	}
	if(document.getElementById("uspass").value==""){
		document.getElementById("uspass").focus();
		alert("Please Enter Password");
		return false;
	}
	
}

function pubi(){
	if(document.getElementById("category").value=='select'){
		document.getElementById("category").focus();
		alert("Please Select Suitable Category.");
		return false;
	}
	if(document.getElementById("title").value==""){
		document.getElementById("title").focus();
		alert("Please Write Suitable Title.");
		return false;
	}
	if(document.getElementById("summary").value==""){
		document.getElementById("summary").focus();
		alert("Please Write Comprehensive summary.");
		return false;
	}
	var sum=document.getElementById("summary").value;
	if(sum.length < 100){
		document.getElementById("summary").focus();
		alert("Summary too minimum  write minimum 100 Cherectors in summary");
		return false;
	}
	if(document.getElementById("keyword").value==""){
		document.getElementById("keyword").focus();
		alert("Please Write keywords seprated by comma.");
		return false;
	}

	if(document.getElementById("security_code").value==""){
		document.getElementById("security_code").focus();
		alert("Please Enter the code shown in image");
		return false;
	}
		


	
	
}

function comi(){
	if(document.getElementById("name").value==''){
		document.getElementById("name").focus();
		alert("Please Write your good name.");
		return false;
	}
	var emailID=document.comment.txtEmail
	
	if ((emailID.value==null)||(emailID.value=="")){
		alert("Please Enter your Email ID")
		emailID.focus()
		return false
	}
	if (echeck(emailID.value)==false){
		emailID.value=""
		emailID.focus()
		return false
	}
	if(document.getElementById("comment").value==""){
		document.getElementById("comment").focus();
		alert("Please Write your comments.");
		return false;
	}
		if(document.getElementById("security_code").value==""){
		document.getElementById("security_code").focus();
		alert("Please Enter the code shown in image");
		return false;
	}
}

function cont(){

	if(document.getElementById("name").value==''){
		document.getElementById("name").focus();
		alert("Please Write your good name.");
		return false;
	}
	var emailID=document.contact.txtEmail
	
	if ((emailID.value==null)||(emailID.value=="")){
		alert("Please Enter your Email ID")
		emailID.focus()
		return false
	}
	if (echeck(emailID.value)==false){
		emailID.value=""
		emailID.focus()
		return false
	}
	if(document.getElementById("subject").value==""){
		document.getElementById("subject").focus();
		alert("Please Write your subject.");
		return false;
	}
	if(document.getElementById("message").value==""){
		document.getElementById("message").focus();
		alert("Please Write your message.");
		return false;
	}
	if(document.getElementById("security_code").value==""){
		document.getElementById("security_code").focus();
		alert("Please Enter the code shown in image");
		return false;
	}
}