function show_map(name)
{
		window.open('map.php?id='+name+'','Blank','taskbar=no,scrollbars=yes,width=500,height=300,top=200,left=200');
		
}


	function check_form() {
		var err1;
		err1 = "";

		if (document.user_add.name.value == "") {
			err1 += "please enter your name.\n";
		}		
		if (document.user_add.email.value == "") {
			err1 += "please enter your Email.\n";
		}		
		
		if (document.user_add.fname1.value == "" && document.user_add.fname2.value == "" && document.user_add.fname3.value == "" && document.user_add.fname4.value == "" && document.user_add.fname5.value == "") {
			err1 += "please enter atleast one friend's name.\n";
		}		

		if (document.user_add.fname1.value != "") {
			if (document.user_add.femail1.value == "") {
				err1 += "please enter first Email.\n";
			}		
			if (document.user_add.femail1.value != "") {
				checkadd1 = document.user_add.femail1.value.indexOf("@")
				if (checkadd1 == (-1)) {
					err1 += "Email address entered is invalid.\n";
				} else {
					checkadd1 = document.user_add.femail1.value.indexOf(".")
					if (checkadd1 == (-1)) {
						err1 += "Email address entered is invalid.\n";
					}
				}
			}	
		}
		
		if (document.user_add.fname2.value != "") {
			if (document.user_add.femail2.value == "") {
				err1 += "please enter Second Email.\n";
			}		
			if (document.user_add.femail2.value != "") {
				checkadd1 = document.user_add.femail2.value.indexOf("@")
				if (checkadd1 == (-1)) {
					err1 += "Email address entered is invalid.\n";
				} else {
					checkadd1 = document.user_add.femail2.value.indexOf(".")
					if (checkadd1 == (-1)) {
						err1 += "Email address entered is invalid.\n";
					}
				}
			}	
		}

		if (document.user_add.fname3.value != "") {
			if (document.user_add.femail3.value == "") {
				err1 += "please enter third Email.\n";
			}		
			if (document.user_add.femail3.value != "") {
				checkadd1 = document.user_add.femail3.value.indexOf("@")
				if (checkadd1 == (-1)) {
					err1 += "Email address entered is invalid.\n";
				} else {
					checkadd1 = document.user_add.femail3.value.indexOf(".")
					if (checkadd1 == (-1)) {
						err1 += "Email address entered is invalid.\n";
					}
				}
			}	
		}

		if (document.user_add.fname4.value != "") {
			if (document.user_add.femail4.value == "") {
				err1 += "please enter forth Email.\n";
			}		
			if (document.user_add.femail4.value != "") {
				checkadd1 = document.user_add.femail4.value.indexOf("@")
				if (checkadd1 == (-1)) {
					err1 += "Email address entered is invalid.\n";
				} else {
					checkadd1 = document.user_add.femail4.value.indexOf(".")
					if (checkadd1 == (-1)) {
						err1 += "Email address entered is invalid.\n";
					}
				}
			}	
		}

		if (document.user_add.fname5.value != "") {
			if (document.user_add.femail5.value == "") {
				err1 += "please enter fifth Email.\n";
			}		
			if (document.user_add.femail5.value != "") {
				checkadd1 = document.user_add.femail1.value.indexOf("@")
				if (checkadd1 == (-1)) {
					err1 += "Email address entered is invalid.\n";
				} else {
					checkadd1 = document.user_add.femail5.value.indexOf(".")
					if (checkadd1 == (-1)) {
						err1 += "Email address entered is invalid.\n";
					}
				}
			}	
		}
		
		if (document.user_add.email.value != "") {
			checkadd1 = document.user_add.email.value.indexOf("@")
			if (checkadd1 == (-1)) {
				err1 += "Email address entered is invalid.\n";
			} else {
				checkadd1 = document.user_add.email.value.indexOf(".")
				if (checkadd1 == (-1)) {
					err1 += "Email address entered is invalid.\n";
				}
			}
		}	
		
		if(err1 != "") {
			alert(err1);
			return false;
		}
		return true;		
	} // End of validation