function isNumeric(Num){
			var len=Num.length;
			var i,count=0,dot=0;
		if (len == 0) return(false);
			for(i=0;i < len;i++){
				ch = Num.charAt(i);
				switch(ch){
					case '0' : count++;break;
					case '1' : count++;break;
					case '2' : count++;break;
					case '3' : count++;break;
					case '4' : count++;break;
					case '5' : count++;break;
					case '6' : count++;break;
					case '7' : count++;break;
					case '8' : count++;break;
					case '9' : count++;break;
					case '.' : count++;break;
					case ',' : count++;break;
		}
	}
	return(count == len);
}

	function check()
				
			  {
			  	var xx1=0;
				var xx2=0;
				var xx3=0;
				var xx4=0;
			  
			  	if (document.con.name.value == "")
			  		{
			  		alert("Please insert sender name?");
			  		document.con.name.focus();
			  		return false;
			  		
			  		}
			  	
			  	if (document.con.address.value == "")
			  		{
			  		alert("Please insert your notes?");
			  		document.con.address.focus();
			  		return false;
			  		}
			  		
			  	/*if (document.con.tel.value == "")
			  		{
			  		alert("Please insert  ")
			  		document.con.tel.focus();
			  		return false;
			  		
			  		}
			  		
			  	if (! isNumeric(document.con.tel.value))
			  		{
			  		alert(" الرجاء ادخال رقم الهاتف بالشكل الصحيح ");
			  		document.con.tel.focus();
			  		return false;
			  		}
				*/

				if (document.con.email.value == "")
			  		{
			  		alert("Please insert your email?")
			  		document.con.email.focus();
			  		return false;
			  		
			  		}
			  	
			  	
				xx1=document.con.email.value.indexOf("@",1)
				xx2=document.con.email.value.indexOf(".",1)
				xx3=document.con.email.value.indexOf("@.",1)
				xx4=document.con.email.value.indexOf(".@",1)	
				
				if (xx1==-1) {
					alert("Wrong email")
					document.con.email.focus();
					return false;}
					 
				if (xx2==-1) {
					alert("Wrong email")
					document.con.email.focus();
					return false;}
					
		 		if (xx3!=-1) {
					alert("Wrong email")
					document.con.email.focus();
					return false;} 
					
				if (xx4!=-1) {
					alert("Wrong email")
					document.con.email.focus();
					return false;
			}
			  }