var on_tab	= 0;

function changeTab(id) {
	
	window.location.hash="info_tabs";
	
	var old_div	= document.getElementById('tab_'+on_tab);
	var new_div	= document.getElementById('tab_'+id);
	
	var old_tab	= document.getElementById('tab_link_'+on_tab);
	var new_tab	= document.getElementById('tab_link_'+id);
	
	old_div.style.display	= 'none';
	new_div.style.display	= 'block';

	old_tab.className	= '';
	new_tab.className	= 'act';
	
	on_tab	= id;	
	
}

function jsValidateEmailAddress(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 openpopuptos()
	{
	var popurl="tos.php"
	winpops=window.open(popurl,"","width=600,height=500,scrollbars,")
	}