Simulate a click using javacsript

Click

 function simulatedClick(target, options) {

            var event = target.ownerDocument.createEvent('MouseEvents'),
                options = options || {};

            //Set your default options to the right of ||
            var opts = {
                type: options.click                     || 'click',
                canBubble:options.canBubble             || true,
                cancelable:options.cancelable           || true,
                view:options.view                       || target.ownerDocument.defaultView, 
                detail:options.detail                   || 1,
                screenX:options.screenX                 || 0, //The coordinates within the entire page
                screenY:options.screenY                 || 0,
                clientX:options.clientX                 || 0, //The coordinates within the viewport
                clientY:options.clientY                 || 0,
                ctrlKey:options.ctrlKey                 || false,
                altKey:options.altKey                   || false,
                shiftKey:options.shiftKey               || false,
                metaKey:options.metaKey                 || false, //I *think* 'meta' is 'Cmd/Apple' on Mac, and 'Windows key' on Win. Not sure, though!
                button:options.button                   || 0, //0 = left, 1 = middle, 2 = right
                relatedTarget:options.relatedTarget     || null,
            }

            //Pass in the options
            event.initMouseEvent(
                opts.type,
                opts.canBubble,
                opts.cancelable,
                opts.view, 
                opts.detail,
                opts.screenX,
                opts.screenY,
                opts.clientX,
                opts.clientY,
                opts.ctrlKey,
                opts.altKey,
                opts.shiftKey,
                opts.metaKey,
                opts.button,
                opts.relatedTarget
            );

            //Fire the event
            target.dispatchEvent(event);
        }