function checkemail(d){var f=false;var a=false;var c=0;var e=0;var b;while(e<d.length&&!f){f=65408&d.charCodeAt(e);e++}e=0;f=f||e>=d.length;if(!f){do{b=d.charCodeAt(e);a=false;if(b==34){e++;f=f||e>=d.length;while(!f&&!a){b=d.charCodeAt(e);if(b==13){f=true}else{if(b==92){e+=2}else{if(b==34){a=true;e++;if(e>=d.length){f=true}else{b=d.charCodeAt(e)}}else{e++}}}}}else{if(!((b>=0&&b<=32)||b==34||b==40||b==41||b==44||b==46||b==58||b==59||b==60||b==62||b==64||b==91||b==92||b==93||b==127)){while(!f&&!a){if((b>=0&&b<=32)||b==34||b==40||b==41||b==44||b==46||b==58||b==59||b==60||b==62||b==64||b==91||b==92||b==93||b==127){a=true}else{e++;if(e>=d.length){f=true}else{b=d.charCodeAt(e)}}}}else{f=true}}a=false;if(b!=46){a=true}else{e++;if(e>=d.length){f=true}else{b=d.charCodeAt(e)}}}while(!a&&!f)}if(!f){if(b==64){e++;if(e>=d.length){f=true}b=d.charCodeAt(e)}else{f=true}}if(!f){do{b=d.charCodeAt(e);a=false;if(b==91){e++;f=f||e>=d.length;while(!f&&!a){if(e>=d.length){f=true}else{b=d.charCodeAt(e);if(b==13||b==91){f=true}else{if(b==92){e+=2}else{if(b==93){a=true;e++;if(e<d.length){b=d.charCodeAt(e)}}else{e++}}}}}}else{if(!((b>=0&&b<=32)||b==34||b==40||b==41||b==44||b==46||b==58||b==59||b==60||b==62||b==64||b==91||b==92||b==93||b==127)){while(!f&&!a){if((b>=0&&b<=32)||b==34||b==40||b==41||b==44||b==46||b==58||b==59||b==60||b==62||b==64||b==91||b==92||b==93||b==127){a=true}else{e++;if(e>=d.length){a=true}else{b=d.charCodeAt(e)}}}}else{f=true}}a=false;if(b!=46){a=true}else{e++;c++;if(e>=d.length){f=true}else{b=d.charCodeAt(e)}}}while(!a&&!f)}return !f&&c>0};