// JavaScript Document



	function trim(s)
	{
		return rtrim(ltrim(s));
	}
	
	function ltrim(s)
	{
		var l=0;
		while(l < s.length && s[l] == ' ')
		{	l++; }
		return s.substring(l, s.length);
	}
	
	function rtrim(s)
	{
		var r=s.length -1;
		while(r > 0 && s[r] == ' ')
		{	r-=1;	}
		return s.substring(0, r+1);
	}

//------EMAIL ADDRESS VALIDATION-------------------------//

	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){
		   
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		   
		    return false
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		    
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		   
		    return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		   
		    return false
		 }
		
		 if (str.indexOf(" ")!=-1){
		    
		    return false
		 }

 		 return true					
	}
	
	////website url check////
	function checkURL(value)
	{
		var urlregex = new RegExp("^(http:\/\/www.|https:\/\/www.|ftp:\/\/www.|www.){1}([0-9A-Za-z]+\.)");		
		if(urlregex.test(value))
		{
			return true;
		}
		else
		{
			return false;
		}
	}



	function check_ads()
	{
		
		
		
		
		//var form	=	document;
		var cat		=	trim(document.getElementById("txtCategory").value);		
		var comp	=	trim(document.getElementById("txtCompany").value);		
		var email	=	trim(document.getElementById("txtEmail").value);
		var addr1	=	trim(document.getElementById("txtAddr1").value);
		var cntry	=	trim(document.getElementById("txtCountry").value);
		var phone	=	trim(document.getElementById("txtTelephone").value);
		var web		=	trim(document.getElementById("txtWebsite").value);
		
		if(cat==''||comp==''||addr1==''||cntry==''||phone=='')
		{
			alert("Enter all mandatoryfields ");
			return false;
		}
		else if(!echeck(email) && email!='')
		{
			alert("Invalid Email")
			return false;
		}
		else if(web!='' && (!checkURL(web)))
		{
			alert("Enter proper website url");
			return false;
		}
		
		return true;
	}
	
	
	
	
	function email_check()
	{
		var em	=	trim(document.dologin.txt_email.value);
		if(em=='')
		{
			alert("Enter your email address .");
			return false;
		}
		else if(!echeck(em))
		{
			alert("Enter a valid email address");
			return false;
		}
		return true;
		
	}