function isNumeric(value) {
	  if (value == null || !value.toString().match(/^[-]?\d*\.?\d*$/)) return false;
	  return true;
	}
			
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					
	}
function sc(str)
{	
	var iChars = "!@#$%^&*()+=-[]\\\';,./{}|\":<>?";
	for (var i = 0; i < str.length; i++) {
		if (iChars.indexOf(str.charAt(i)) != -1) {
			return true;
		}
		
	}

}	

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