function echeck(str) {
	var extrastr = str
	var at="@"
	var dot="."
	var lat=str.indexOf(at)
	var lstr=str.length
	var ldot=str.indexOf(dot)
	var canuse="0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ @-_."
		
	for (var i=0;i<extrastr.length;i++){
	temp=extrastr.charAt(i)
	if (canuse.indexOf(temp)==-1){return false}}	
	
	
	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					
}





/* isAZ09 */
function isAZ09(pasdfield) {
var canuse="0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ "

for (var i=0;i<pasdfield.length;i++){
	temp=pasdfield.charAt(i)
	if (canuse.indexOf(temp)==-1){return false}
}
return true}



/* isPHONE */
function isPHONE(pasdfield) {
var canuse="0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ ()-+"

for (var i=0;i<pasdfield.length;i++){
	temp=pasdfield.charAt(i)
	if (canuse.indexOf(temp)==-1){return false}
}
return true}



/* isANYCHAR */
function isANYCHAR(pasdfield) {
var canuse="0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ !@#$%^&*()_+-=\|{}[]:;,./<>?'"

for (var i=0;i<pasdfield.length;i++){
	temp=pasdfield.charAt(i)
	if (canuse.indexOf(temp)==-1){return false}
}
return true}


/* isANYCHAR */
function isCNO(pasdfield) {
var canuse="0123456789cC"

for (var i=0;i<pasdfield.length;i++){
	temp=pasdfield.charAt(i)
	if (canuse.indexOf(temp)==-1){return false}
}
return true}


/* isANYCHAR */
function isINO(pasdfield) {
var canuse="0123456789SMIPsmip"

for (var i=0;i<pasdfield.length;i++){
	temp=pasdfield.charAt(i)
	if (canuse.indexOf(temp)==-1){return false}
}
return true}